简便运算4.7×3.4+0.47×53+4.7×1.3 0.25×0.9÷0,·25÷0,9 0,25×0,9÷0,25×0,9 5,3×2,5+25×0,48-0,25
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/10 23:26:28
![简便运算4.7×3.4+0.47×53+4.7×1.3 0.25×0.9÷0,·25÷0,9 0,25×0,9÷0,25×0,9 5,3×2,5+25×0,48-0,25](/uploads/image/z/8460463-31-3.jpg?t=%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%974.7%C3%973.4%2B0.47%C3%9753%2B4.7%C3%971.3+0.25%C3%970.9%C3%B70%2C%C2%B725%C3%B70%2C9+0%2C25%C3%970%2C9%C3%B70%2C25%C3%970%2C9+5%2C3%C3%972%2C5%2B25%C3%970%2C48%EF%BC%8D0%2C25)
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简便运算4.7×3.4+0.47×53+4.7×1.3 0.25×0.9÷0,·25÷0,9 0,25×0,9÷0,25×0,9 5,3×2,5+25×0,48-0,25
简便运算
4.7×3.4+0.47×53+4.7×1.3 0.25×0.9÷0,·25÷0,9 0,25×0,9÷0,25×0,9 5,3×2,5+25×0,48-0,25
简便运算4.7×3.4+0.47×53+4.7×1.3 0.25×0.9÷0,·25÷0,9 0,25×0,9÷0,25×0,9 5,3×2,5+25×0,48-0,25
4.7×3.4+0.47×53+4.7×1.3
= 4.7×3.4+4.7x0.1×53+4.7×1.3
=4.7x(3.4+5.3+1.3 )
=4.7x10
=47
0.25×0.9÷0,·25÷0.9
= (0.25×0.9)÷(0,·25x0.9)
=1
0,25×0,9÷0,25×0,9
= 0.25×0.9÷(1/4)x0.9
= 0.25×0.9x4x0.9
=0.81
5,3×2.5+25×0,48-0,25
=5.3x2.5+2.5x10x0.48-2.5x0.1
=2.5x(5.3+4.8-0.1)
=2.5x10
=25