直接写出得数.1-23=45+15=340-70=41×2=23×0=60÷7=1800×3=18÷9+7=416×5≈524-398≈
直接写出得数.
1-= | += | 340-70= | 41×2= | 23×0= |
60÷7= | 1800×3= | 18÷9+7= | 416×5≈ | 524-398≈ |
1-= | += | 340-70= | 41×2= | 23×0= |
60÷7= | 1800×3= | 18÷9+7= | 416×5≈ | 524-398≈ |
1-= | += | 340-70= | 41×2= | 23×0= |
60÷7= | 1800×3= | 18÷9+7= | 416×5≈ | 524-398≈ |
1-= | += | 340-70= | 41×2= | 23×0= |
1-= | =2 |
3 |
2 |
2 | 3 |
3 | += | +=4 |
5 |
4 |
4 | 5 |
5 | =1 |
5 |
1 |
1 | 5 |
5 | 340-70= | 41×2= | 23×0= | 60÷7= | 1800×3= | 18÷9+7= | 416×5≈ | 524-398≈ |
60÷7= | 1800×3= | 18÷9+7= | 416×5≈ | 524-398≈ |
答案和解析
(1)1-
=;
(2)+=1;
(3)340-70=270;
(4)41×2=82;
(5)23×0=0;
(6)60÷7=;
(7)1800×3=5400;
(8)18÷9+7=9;
(9)416×5≈2100;
(10)524-398≈124.
故答案为:,1,270,82,0,,5400,9,2000,2100,124. 2 |
3 |
2 |
2 | 2
3 |
3 | 3=
;
(2)+=1;
(3)340-70=270;
(4)41×2=82;
(5)23×0=0;
(6)60÷7=;
(7)1800×3=5400;
(8)18÷9+7=9;
(9)416×5≈2100;
(10)524-398≈124.
故答案为:,1,270,82,0,,5400,9,2000,2100,124. 1 |
3 |
1 |
1 | 1
3 |
3 | 3;
(2)
+=1;
(3)340-70=270;
(4)41×2=82;
(5)23×0=0;
(6)60÷7=;
(7)1800×3=5400;
(8)18÷9+7=9;
(9)416×5≈2100;
(10)524-398≈124.
故答案为:,1,270,82,0,,5400,9,2000,2100,124. 4 |
5 |
4 |
4 | 4
5 |
5 | 5+
=1;
(3)340-70=270;
(4)41×2=82;
(5)23×0=0;
(6)60÷7=;
(7)1800×3=5400;
(8)18÷9+7=9;
(9)416×5≈2100;
(10)524-398≈124.
故答案为:,1,270,82,0,,5400,9,2000,2100,124. 1 |
5 |
1 |
1 | 1
5 |
5 | 5=1;
(3)340-70=270;
(4)41×2=82;
(5)23×0=0;
(6)60÷7=
;
(7)1800×3=5400;
(8)18÷9+7=9;
(9)416×5≈2100;
(10)524-398≈124.
故答案为:,1,270,82,0,,5400,9,2000,2100,124. 60 |
7 |
60 |
60 | 60
7 |
7 | 7;
(7)1800×3=5400;
(8)18÷9+7=9;
(9)416×5≈2100;
(10)524-398≈124.
故答案为:
,1,270,82,0,,5400,9,2000,2100,124. 1 |
3 |
1 |
1 | 1
3 |
3 | 3,1,270,82,0,
,5400,9,2000,2100,124. 60 |
7 |
60 |
60 | 60
7 |
7 | 7,5400,9,2000,2100,124.
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