2.5*(0.08+3.6)用乘法分配律
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答案9.2,计算过程。 2.5x(0.08+3.6) =2.5x0.08+2.5x3.6 =0.2+2.5x4x0.9 =0.2+10x0.9 =0.2+9 =9.2
咨询记录 · 回答于2022-11-03
2.5*(0.08+3.6)用乘法分配律
答案9.2,计算过程。 2.5x(0.08+3.6) =2.5x0.08+2.5x3.6 =0.2+2.5x4x0.9 =0.2+10x0.9 =0.2+9 =9.2
答案9.2,计算过程。 2.5x(0.08+3.6) =2.5x0.08+2.5x3.6 =0.2+2.5x4x0.9 =0.2+10x0.9 =0.2+9 =9.2
(1.8+0.06)*2.5
0.71*610-61*4.9
17*6.2+45*6.2
2.5*{0.32+0.04}
(1.8+0.06)x2.5=1.8x2.5+0.06x2.5=2x0.9x2.5+0.15=0.9x5+0.15=4.5+0.15=4.65
2.5*【0.16+0.8】
0.71x610-61x4.9 =7.1x61-61x4.9 =61x(7.1-4.9) =61x2.2=13.42
不好意思,打错了
0.71x610-61x4.9 =7.1x61-61x4.9 =61x(7.1-4.9) =61x2.2=134.2
17*6.2+45*6.2=6.2x(17+45)=6.2x62=384.4
0.02*410+79*4.1-0.5*410+5*41
2.5x(0.32+0.04)=2.5x0.32+2.5x0.04=0.8+0.1=0.9
2.5*【0.16+0.8】=2.5x0.16+2.5x0.8=0.4+2=2.4
0.02*410+79*4.1-0.5*410+5*41 =2x41+7.9x41-5x41+5x41 =41x(2+7.9-5+5) =41x9.9 =41x(10-0.1) =41x10-41x0.1 =410-4.1 =405.9
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