6.2x1.1+6.2x5.9-0.7x22怎么简算?
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解:简便运算如下:
6.2x1.1+6.2x5.9-0.7x22
=6.2x(1.1+5.9)-[(0.7x10)x22/10]
=6.2x7-7x2.2
=7x(6.2-2.2)
=7x4
=28
6.2x1.1+6.2x5.9-0.7x22
=6.2x(1.1+5.9)-[(0.7x10)x22/10]
=6.2x7-7x2.2
=7x(6.2-2.2)
=7x4
=28
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6.2x1.1+6.2x5.9-0.7x22
=6.2(1.1+5.9)-15.4
=43.4-15.4
=28
=6.2(1.1+5.9)-15.4
=43.4-15.4
=28
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=6.2x(1.1+5.9)-0.7x22
=6.2x7-0.7x22
=0.7x62-0.7x22
=0.7x(62-22)
=0.7x40
=28
=6.2x7-0.7x22
=0.7x62-0.7x22
=0.7x(62-22)
=0.7x40
=28
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6.2×1.1+6.2×5.9-0.7×22
=6.2×(1.1+5.9)-0.7×22
=6.2×7-0.7×22
=6.2×7-7×2.2
=7×(6.2-2.2)
=7×4
=28
=6.2×(1.1+5.9)-0.7×22
=6.2×7-0.7×22
=6.2×7-7×2.2
=7×(6.2-2.2)
=7×4
=28
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6.2*(1.1+5.9)-0.7*22
6.2*7-7*2.2
7*(6.2-2.2)
7*4
28
6.2*7-7*2.2
7*(6.2-2.2)
7*4
28
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