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脱式计算(能简便计算的要简便计算)1.96-3.2×0.5+0.40.27+0.27×0.37+0.27×0.639.68×10112.5×4×2.5×129.6÷(9.6×4)0.78÷0.25÷4.
题目详情
脱式计算(能简便计算的要简便计算) 1.96-3.2×0.5+0.4 | 0.27+0.27×0.37+0.27×0.63 | 9.68×101 |
12.5×4×2.5×12 | 9.6÷(9.6×4) | 0.78÷0.25÷4. |
▼优质解答
答案和解析
(1)1.96-3.2×0.5+0.4
=1.96-1.6+0.4
=0.36+0.4
=0.76
(2)0.27+0.27×0.37+0.27×0.63
=0.27×(1+0.37+0.63)
=0.27×2
=0.54
(3)9.68×101
=9.68×(100+1)
=9.68×100+9.68
=968+9.68
=977.68
(4)12.5×4×2.5×12
=(12.5×4×3)×(4×2.5)
=180×10
=1800
(5)9.6÷(9.6×4)
=9.6÷9.6÷4
=1÷4
=0.25
(6)0.78÷0.25÷4
=0.78÷(0.25×4)
=0.78÷1
=0.78
=1.96-1.6+0.4
=0.36+0.4
=0.76
(2)0.27+0.27×0.37+0.27×0.63
=0.27×(1+0.37+0.63)
=0.27×2
=0.54
(3)9.68×101
=9.68×(100+1)
=9.68×100+9.68
=968+9.68
=977.68
(4)12.5×4×2.5×12
=(12.5×4×3)×(4×2.5)
=180×10
=1800
(5)9.6÷(9.6×4)
=9.6÷9.6÷4
=1÷4
=0.25
(6)0.78÷0.25÷4
=0.78÷(0.25×4)
=0.78÷1
=0.78
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