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计算,能简算的要简算1.25×3.2×0.814.5×10214.64+3.7×2.84.8×56.7+0.567×5208.7÷0.2÷0.5.
题目详情
计算,能简算的要简算
1.25×3.2×0.8
14.5×102
14.64+3.7×2.8
4.8×56.7+0.567×520
8.7÷0.2÷0.5.
1.25×3.2×0.8
14.5×102
14.64+3.7×2.8
4.8×56.7+0.567×520
8.7÷0.2÷0.5.
▼优质解答
答案和解析
(1)1.25×3.2×0.8
=(1.25×0.8)×3.2
=1×3.2
=3.2
(2)14.5×102
=14.5×(100+2)
=14.5×100+14.5×2
=1450+29
=1479
(3)14.64+3.7×2.8
=14.64+10.36
=25
(4)4.8×56.7+0.567×520
=4.8×56.7+56.7×5.2
=56.7×(4.8+5.2)
=56.7×10
=567
(5)8.7÷0.2÷0.5
=8.7÷(0.2×0.5)
=8.7÷0.1
=87
=(1.25×0.8)×3.2
=1×3.2
=3.2
(2)14.5×102
=14.5×(100+2)
=14.5×100+14.5×2
=1450+29
=1479
(3)14.64+3.7×2.8
=14.64+10.36
=25
(4)4.8×56.7+0.567×520
=4.8×56.7+56.7×5.2
=56.7×(4.8+5.2)
=56.7×10
=567
(5)8.7÷0.2÷0.5
=8.7÷(0.2×0.5)
=8.7÷0.1
=87
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