
计算下面各题,能简算的要简算. 20×712+4×712 58÷14+4×38 23.6×10%+13.6×910% (12-14
计算下面各题,能简算的要简算.20×712+4×71258÷14+4×3823.6×10%+13.6×910%(12-14)×34×8....
计算下面各题,能简算的要简算. 20×712+4×712 58÷14+4×38 23.6×10%+13.6×910% (12-14)×34×8.
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(1)20×
7 |
12 |
7 |
12 |
=(20+4)×
7 |
12 |
=24×
7 |
12 |
=14;
(2)
5 |
8 |
1 |
4 |
3 |
8 |
=
5 |
8 |
3 |
8 |
=(
5 |
8 |
3 |
8 |
=1×4,
=4;
(3)23.6×10%+13.6×910%,
=2.36+123.76,
=126.12;
(4)(
1 |
2 |
1 |
4 |
3 |
4 |
=
1 |
4 |
3 |
4 |
=
3 |
2 |
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