初一的有理数乘法的结合律,交换律,分配律的计算题,
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初一的有理数乘法的结合律,交换律,分配律的计算题,
初一的有理数乘法的结合律,交换律,分配律的计算题,
初一的有理数乘法的结合律,交换律,分配律的计算题,
8.75-0.35+(1.25-6.65)
=(8.75+1.25)-(0.35+6.65)
=10-7
=3
7.2×14.5+17×2.8
=7.2×(17-2.5)+17×2.8
=7.2×17-7.2×2.5+17×2.8
=17×(7.2+2.8)-7.2×2.5
=17×10-7.2×2.5
=170-18
=152
12.8×34.5+12.8×12.3+46.8×87.2
=12.8×(34.5+12.3)+46.8×87.2
=12.8×46.8+46.8×87.2
=46.8×(12.8+87.2)
=4680
9.875-(3又八分之七-75%)+3又四分之一
=(9.875-3.875)+(0.75+3.25)
=6+4
=10
0.8888×0.6+0.2222×7.6
=0.2222×4×0.6+0.2222×7.6
=0.2222×(2.4+7.6)
=0.2222×10
=2.222
56×1.02-1.4×0.8
=5.6×10.2-0.2×5.6=5.6×10
=56
465×8.2+465×29.6-365×37.8
=465×(8.2+29.6)-365×37.8
=465×37.8-365×37.8
=37.8×(465-365)
=37.8×100
=3780
4.25×166-42又二分之一×14.2+24×5.75
=4.25×166-42.5×14.2+24×5.75
=4.25×(166-142)+24×5.75
=4.25×24+24×5.75
=24×(4.25+5.75)
=24×10
=240