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简算.(1)999999×7+111111×37(2)24×(512-16)(3)37×3536(4)56×113+59×213+518×613.
题目详情
简算.
(1)999999×7+111111×37
(2)24×(
-
)
(3)37×
(4)
×
+
×
+
×
.
(1)999999×7+111111×37
(2)24×(
5 |
12 |
1 |
6 |
(3)37×
35 |
36 |
(4)
5 |
6 |
1 |
13 |
5 |
9 |
2 |
13 |
5 |
18 |
6 |
13 |
▼优质解答
答案和解析
(1)999999×7+111111×37,
=111111×63+111111×37
=111111×(63+37),
=111111×100,
=11111100;
(2)24×(
-
),
=24×
−24×
,
=10-4,
=6;
(3)37×
,
=(36+1)×
,
=36×
+1×
,
=35+
,
=35
;
(4)
×
+
×
+
×
,
=
×
+
×
+
×
,
=(
+
+
)×
,
=
×
,
=
.
=111111×63+111111×37
=111111×(63+37),
=111111×100,
=11111100;
(2)24×(
5 |
12 |
1 |
6 |
=24×
5 |
12 |
1 |
6 |
=10-4,
=6;
(3)37×
35 |
36 |
=(36+1)×
35 |
36 |
=36×
35 |
36 |
35 |
36 |
=35+
35 |
36 |
=35
35 |
36 |
(4)
5 |
6 |
1 |
13 |
5 |
9 |
2 |
13 |
5 |
18 |
6 |
13 |
=
1 |
6 |
5 |
13 |
2 |
9 |
5 |
13 |
6 |
18 |
5 |
13 |
=(
1 |
6 |
2 |
9 |
6 |
18 |
5 |
13 |
=
13 |
18 |
5 |
13 |
=
5 |
18 |
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