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能简便计算的要用简便方法计算418+901÷17;79÷115+29×511;5-5×25+35;57.5-4.25-15.75;(58+227)×8+1127;75×〔1÷(23-15).
题目详情
能简便计算的要用简便方法计算
418+901÷17;
÷
+
×
; 5-5×
+
;
57.5-4.25-15.75; (
+
)×8+
;
×〔1÷(
-
).
÷
+
×
; 5-5×
+
;
57.5-4.25-15.75; (
+
)×8+
;
×〔1÷(
-
).
7 7 9 9
+
×
; 5-5×
+
;
57.5-4.25-15.75; (
+
)×8+
;
×〔1÷(
-
).
11 11 5 5
×
; 5-5×
+
;
57.5-4.25-15.75; (
+
)×8+
;
×〔1÷(
-
).
2 2 9 9
; 5-5×
+
;
57.5-4.25-15.75; (
+
)×8+
;
×〔1÷(
-
).
5 5 11 11
+
;
57.5-4.25-15.75; (
+
)×8+
;
×〔1÷(
-
).
2 2 5 5
;
57.5-4.25-15.75; (
+
)×8+
;
×〔1÷(
-
).
3 3 5 5
+
)×8+
;
×〔1÷(
-
).
5 5 8 8
)×8+
;
×〔1÷(
-
).
2 2 27 27
;
×〔1÷(
-
).
11 11 27 27
×〔1÷(
-
).
7 7 5 5
-
).
2 2 3 3
).
1 1 5 5
418+901÷17;
| 7 |
| 9 |
| 11 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
| 2 |
| 5 |
| 3 |
| 5 |
57.5-4.25-15.75; (
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 7 |
| 9 |
| 11 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
| 2 |
| 5 |
| 3 |
| 5 |
57.5-4.25-15.75; (
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 7 |
| 9 |
| 11 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
| 2 |
| 5 |
| 3 |
| 5 |
57.5-4.25-15.75; (
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 11 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
| 2 |
| 5 |
| 3 |
| 5 |
57.5-4.25-15.75; (
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
| 2 |
| 5 |
| 3 |
| 5 |
57.5-4.25-15.75; (
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 5 |
| 11 |
| 2 |
| 5 |
| 3 |
| 5 |
57.5-4.25-15.75; (
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 2 |
| 5 |
| 3 |
| 5 |
57.5-4.25-15.75; (
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 3 |
| 5 |
| 5 |
| 8 |
| 2 |
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| 11 |
| 27 |
| 7 |
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| 2 |
| 3 |
| 1 |
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| 5 |
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| 2 |
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| 11 |
| 27 |
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 2 |
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| 11 |
| 27 |
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 11 |
| 27 |
| 7 |
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| 2 |
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| 1 |
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| 1 |
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| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 5 |
▼优质解答
答案和解析
(1)418+901÷17
=418+53
=471;
(2)
÷
+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
7 7 79 9 9÷
+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
11 11 115 5 5+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
2 2 29 9 9×
=
×
+
×
=(
+
)×
=1×
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
5 5 511 11 11
=
×
+
×
=(
+
)×
=1×
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
7 7 79 9 9×
+
×
=(
+
)×
=1×
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
5 5 511 11 11+
×
=(
+
)×
=1×
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
2 2 29 9 9×
=(
+
)×
=1×
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
5 5 511 11 11
=(
+
)×
=1×
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
7 7 79 9 9+
)×
=1×
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
2 2 29 9 9)×
=1×
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
5 5 511 11 11
=1×
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
5 5 511 11 11
=
;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
5 5 511 11 11;
(3)5-5×
+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
2 2 25 5 5+
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
3 3 35 5 5
=5-2+
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
3 3 35 5 5
=3+
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
3 3 35 5 5
=3
;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
3 3 35 5 5;
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
5 5 58 8 8+
)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
2 2 227 27 27)×8+
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
11 11 1127 27 27
=
×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
5 5 58 8 8×8+
×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
2 2 227 27 27×8+
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
11 11 1127 27 27
=5+(
+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
16 16 1627 27 27+
)
=5+1
=6;
(6)
×[1÷(
-
)]
=
11 11 1127 27 27)
=5+1
=6;
(6)
×[1÷(
-
)]
=
7 7 75 5 5×[1÷(
-
)]
=
2 2 23 3 3-
)]
=
1 1 15 5 5)]
=
7 7 75 5 5
举报
问题解析 问题解析
(1)先算除法,再算加法;
(2)利用乘法分配律简算;
(3)先算乘法,再算减法,最后算加法;
(4)利用减法的性质简算;
(5)先利用乘法分配律,再利用加法结合律简算;
(6)先算减法,再算除法,最后算乘法. (1)先算除法,再算加法;
(2)利用乘法分配律简算;
(3)先算乘法,再算减法,最后算加法;
(4)利用减法的性质简算;
(5)先利用乘法分配律,再利用加法结合律简算;
(6)先算减法,再算除法,最后算乘法.名师点评 名师点评
本题考点: 本题考点:
整数四则混合运算;运算定律与简便运算;分数的四则混合运算;小数四则混合运算. 整数四则混合运算;运算定律与简便运算;分数的四则混合运算;小数四则混合运算.
考点点评: 考点点评:
混合运算的关键是抓住运算顺序,正确按运算顺序计算,适当运用运算定律简算. 混合运算的关键是抓住运算顺序,正确按运算顺序计算,适当运用运算定律简算.
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var userCity = "\u4e50\u5c71",
userProvince = "\u56db\u5ddd",
zuowenSmall = "2";
=418+53
=471;
(2)
| 7 |
| 9 |
| 11 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
=
| 7 |
| 9 |
| 5 |
| 11 |
| 2 |
| 9 |
| 5 |
| 11 |
=(
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 7 |
| 9 |
| 11 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
=
| 7 |
| 9 |
| 5 |
| 11 |
| 2 |
| 9 |
| 5 |
| 11 |
=(
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 11 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
=
| 7 |
| 9 |
| 5 |
| 11 |
| 2 |
| 9 |
| 5 |
| 11 |
=(
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
=
| 7 |
| 9 |
| 5 |
| 11 |
| 2 |
| 9 |
| 5 |
| 11 |
=(
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 5 |
| 11 |
=
| 7 |
| 9 |
| 5 |
| 11 |
| 2 |
| 9 |
| 5 |
| 11 |
=(
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 7 |
| 9 |
| 5 |
| 11 |
| 2 |
| 9 |
| 5 |
| 11 |
=(
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 5 |
| 11 |
| 2 |
| 9 |
| 5 |
| 11 |
=(
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
=(
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 5 |
| 11 |
=(
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 5 |
| 11 |
(3)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 3 |
| 5 |
=3
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 3 |
| 5 |
(4)57.5-4.25-15.75
=57.5-(4.25+15.75)
=57.5-20
=37.5;
(5)(
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 16 |
| 27 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 11 |
| 27 |
=5+1
=6;
(6)
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 1 |
| 5 |
=
| 7 |
| 5 |
| 7 |
| 5 |
作业帮用户
2017-10-30
举报
作业帮用户作业帮用户
2017-10-302017-10-30
举报
- 问题解析
- (1)先算除法,再算加法;
(2)利用乘法分配律简算;
(3)先算乘法,再算减法,最后算加法;
(4)利用减法的性质简算;
(5)先利用乘法分配律,再利用加法结合律简算;
(6)先算减法,再算除法,最后算乘法.
(2)利用乘法分配律简算;
(3)先算乘法,再算减法,最后算加法;
(4)利用减法的性质简算;
(5)先利用乘法分配律,再利用加法结合律简算;
(6)先算减法,再算除法,最后算乘法.
(2)利用乘法分配律简算;
(3)先算乘法,再算减法,最后算加法;
(4)利用减法的性质简算;
(5)先利用乘法分配律,再利用加法结合律简算;
(6)先算减法,再算除法,最后算乘法.
- 名师点评
-
- 本题考点:
- 整数四则混合运算;运算定律与简便运算;分数的四则混合运算;小数四则混合运算.
-
- 考点点评:
- 混合运算的关键是抓住运算顺序,正确按运算顺序计算,适当运用运算定律简算.
- 本题考点:
- 整数四则混合运算;运算定律与简便运算;分数的四则混合运算;小数四则混合运算.
- 本题考点:
- 整数四则混合运算;运算定律与简便运算;分数的四则混合运算;小数四则混合运算.
- 考点点评:
- 混合运算的关键是抓住运算顺序,正确按运算顺序计算,适当运用运算定律简算.
- 考点点评:
- 混合运算的关键是抓住运算顺序,正确按运算顺序计算,适当运用运算定律简算.
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