0.49*8
=（0.4+0.09）×8
=0.4×8+0.09×8
=3.2+0.72
=3.92
1.5*2.03
=1.5×（2+0.03）
=1.5×2+1.5×0.03
=3+0.045
=3.045
7.5*0.06
=（7+0.5）×0.06
=7×0.06+0.5×0.06
=0.42+0.03
=0.45
0.49*8 1.5*2.03 7.5*0.06 用乘法分配律验算怎么验啊
1个回答
相关问题
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7.5*3.8+7.5+7.5*5.2用乘法分配律怎算
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2.5*3.8*0.4 6.7*4.5+4.5*13.3 2.06*0.9+2.06 0.8*[0.125+12.5+1
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口算．2-0.7= 7.8+2= 5.74+0.26= 0.06+0.5= 4.6+5.4= 7.52-2.52= 1-
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接写出得数．5.2+0.5= 7-0.06= 5.6÷7= 8.3-5.7= 1.06+9.4= 4.04÷4= 2.5
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口算．2-0.7=7.8+2=5.74+0.26=0.06+0.5=4.6+5.4=1-0.25=7.52-2.52=0
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431+5*4320+49*432可以用乘法分配律变简单吗
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乘法分配律怎么用文字表达啊!:-)
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请直接写出得数． 0.07×0.8= 1.7×0.03 0.16×0.5= 4.5×0.03= 0.72÷12= 5.2
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0.01+0.02+0.03+...+0.19+0.2用乘法算式怎么算
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直接写出得数． 5.03+15.7= 10-9.03= 1.07×0.06= 11.2×0.4= 2.15×3= 3÷4