62.3除以(6.23初以0.8)用简便运算
62.3除以(6.23初以0.8)用简便运算
62.3÷(6.23÷0.8)
=62.3÷6.23*0.8
=10÷0.8
=12.5
4.05除以0.8除以0.05的简便运算
4.05÷0.8÷0.05
=4.05÷(0.8x0.05)
=4.05÷0.04
=101.25
0.8除以0.25的简便运算
0.8÷0.25=4×0.8÷4×0.25=3.2×1=3.2
100除以0.25乘0.8简便运算
=100除以(1/4)X8
=100X4X8
=3200
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5.1除以(4.25乘0.8)简便运算
5.1除以(4.25乘0.8)
=5.1÷3.4
=(3×1.7)÷(2×1.7)
=3÷2
=1.5
2.4乘以0.8除以0.28简便运算
2.4×0.8÷0.28=(2.4×0.8)÷(0.2×1.4)=(2.4÷1.4)×(0.8÷0.2)=(1.2÷0.7)×4=12×4÷7=48/7
2.75+2.5除以0.8×4简便运算
2.75+2.5/0.8×4
=2.75+2.5*4/0.8
=2.75+10/(4/5)
=2.75+10*5/4
=2.75+12.5
=15.25
800初以32的简便运算
800/32=(800/8)/4=100/4=25
1.5除以0.08加22.8除以0.8加22除以8的简便运算
解:1.5/0.08+22.8/0.8+22/8
=150/8+228/8+22/8
=1/8x(150+228+22)
=1/8x400
=50
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