5.3*48+ 5.3*14+ 6.2*47的简便运算
5.3*48+ 5.3*14+ 6.2*47的简便运算
5.3*48+ 5.3*14+ 6.2*47
=5.3*(48+ 14)+ 6.2*47
=5.3*62+6.2*47
=5.3*62+62*4.7
=62x(5.3+4.7)
=62x10
=620
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5.3×2.7-5.3×1.7简便运算
5.3×2.7-5.3×1.7
=5.3x(2.7-1.7)
=5.3x1
=5.3
3.86×47-38.6×5.3的简便运算
3.86×47-38.6×5.3
=3.86×47-3.86×53
=3.86x(47+53)
=3.86x100
=386
47*2.14+5.3*21.4的简便运算
=47x2.14+53x2.14
=(47+53)x2.14
=100x2.14
=214
5.3×2.44的简便运算
结果等于3/4,算法为:将共有的3/4提出来,剩下的2/5和3/5相加,最后得出结果。 运算法则:加法交换律:两个加数交换位置,和不变加法结合律:先把前两个数相加,或先把后两个数相加乘法交换律:两个因数交换位置,积不变乘法结合律:先乘前两个数,或先乘后两个数,积不变乘法分配律:两个数的和,乘以一个数,可以拆开来算,积不变
2.51x48 25.1x5.3一5.3的简便运算
2.51X48+25.1X5.3-5.3
=2.51X(48+53)-5.3
=2.51X101-5.3
=2.51X100+2.51X1-5.3
=251+2.51-5.3
=253.51-5-0.3
=248.21
3.25乘47加5.3乘32.5的简便运算
3.25乘47加5.3乘32.5
=3.25x47+3.25x53
=3.25x(47+53)
=3.25x100
=325
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3.8647+38.65.3简便运算
3.86×47+38.6×5.3
=3.86×(47+53)
=3.86×100
=386
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5.3×4.6+6.4×5.3-5.3的简便运算怎么写
=5.3×(4.6+6.4-1)
=5.3×10
=53
16.2+5.3+1.7简便运算
16.2+5.3+1.7
=16.2+(5.3+1.7)
=16.2+7
=23.2