用简便方法计算 (1)1÷32÷0.05÷0.25÷0.5 (2)1/25×5.6+2.25×3.
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/10/07 17:32:51
用简便方法计算 (1)1÷32÷0.05÷0.25÷0.5 (2)1/25×5.6+2.25×3.
用简便方法计算
(1)1÷32÷0.05÷0.25÷0.5
(2)1/25×5.6+2.25×3.6
用简便方法计算
(1)1÷32÷0.05÷0.25÷0.5
(2)1/25×5.6+2.25×3.6
1÷32÷0.05÷0.25÷0.5=1÷(32×0.05×0.25×0.5)
=1÷(2×0.05×4×0.25×4×0.5)
=1÷(0.1×1×2)
=1÷0.2
=5
1/25×5.6+2.25×3.6
=1.25×(8×0.7)+2.25×(4×0.9)
=1.25×8×0.7+2.25×4×0.9
=10×0.7+9×0.9
=7+8.1
=15.1
=1÷(2×0.05×4×0.25×4×0.5)
=1÷(0.1×1×2)
=1÷0.2
=5
1/25×5.6+2.25×3.6
=1.25×(8×0.7)+2.25×(4×0.9)
=1.25×8×0.7+2.25×4×0.9
=10×0.7+9×0.9
=7+8.1
=15.1
用简便方法计算 (1)1÷32÷0.05÷0.25÷0.5 (2)1/25×5.6+2.25×3.
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