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脱式计算,能简算的要简算.1.25×32×2.596.5×105-5×96.510÷2.5×4+53.8×1.5+4×0.75.3×6.3+5.3×4.7-5.3.
题目详情
脱式计算,能简算的要简算.
1.25×32×2.5
96.5×105-5×96.5
10÷2.5×4+5
3.8×1.5+4×0.7
5.3×6.3+5.3×4.7-5.3.
1.25×32×2.5
96.5×105-5×96.5
10÷2.5×4+5
3.8×1.5+4×0.7
5.3×6.3+5.3×4.7-5.3.
▼优质解答
答案和解析
(1)1.25×32×2.5
=1.25×8×4×2.5
=(1.25×8)×(4×2.5)
=10×10
=100
(2)96.5×105-5×96.5
=96.5×(105-5)
=96.5×100
=9650
(3)10÷2.5×4+5
=4×4+5
=16+5
=21
(4)3.8×1.5+4×0.7
=5.7+2.8
=8.5
(5)5.3×6.3+5.3×4.7-5.3
=5.3×(6.3+4.7-1)
=5.3×10
=53
(1)1.25×32×2.5
=1.25×8×4×2.5
=(1.25×8)×(4×2.5)
=10×10
=100
(2)96.5×105-5×96.5
=96.5×(105-5)
=96.5×100
=9650
(3)10÷2.5×4+5
=4×4+5
=16+5
=21
(4)3.8×1.5+4×0.7
=5.7+2.8
=8.5
(5)5.3×6.3+5.3×4.7-5.3
=5.3×(6.3+4.7-1)
=5.3×10
=53
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