计算下面各题.(能简算的要简算)12÷72×78713×34+34×61337÷711+47÷711(38+23)÷12437+3.6-17+6.4119×3.8-3.8×29.-数学
=(
7 |
13 |
6 |
13 |
3 |
4 |
=1×
3 |
4 |
=
3 |
4 |
(3)
3 |
7 |
7 |
11 |
4 |
7 |
7 |
11 |
=
3 |
7 |
11 |
7 |
4 |
7 |
11 |
7 |
=(
3 |
7 |
4 |
7 |
11 |
7 |
=1×
11 |
7 |
=
11 |
7 |
(4)(
3 |
8 |
2 |
3 |
1 |
24 |
=(
3 |
8 |
2 |
3 |
=
3 |
8 |
2 |
3 |
=9+16,
=25;
(5)
3 |
7 |
1 |
7 |
=(
3 |
7 |
1 |
7 |
=
2 |
7 |
=10
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