3/4×（2.5-1/4）+5/12÷0.25
=3/4×2.25+5/12X4
=3/4X9/4+5/3
=27/16+5/3
=81/48+80/48
=161/48
3/4×（2.5-1/4）+5/12÷0.25
2个回答
相关问题
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1/5×12÷1/5= 0.25×12.5÷1/32= 2/3×4/9×
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计算：（1）（-12）÷4×（-6）÷2；（2）(−58)×(−4)2−0.25×(−5)×(−4)3；（3）(−112
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简便计算：2.5×3.2×12.5 6.3÷1.4 2.5×2.4 15.32×4+4.68÷0.25 2.55×1.5
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0.8÷(5/4×1.25)÷(0.64-1/25)+1.2×0.5÷4/5
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1、4x-1/2(x+5)=5/2 2、2/3x÷0.4×4/5=16 3、9x-12/25÷0.12=167
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口算1.2÷0.2= 2.5×4= 0.25+4= 1.87×0= 3.5+0.5= 1.2÷0.4= 3.6÷4= 0
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4.5÷0.9﹦ 2.5×4﹦ 25×3.3×0﹦ 294×3≈ 420÷58≈ 2.5×0.4= 0.3÷0.1﹦ 7
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简便计算：(1) 12.6÷5.6×0.8 (2) 4.5×78÷1.3 (3) 15.79÷4-3.79×0.25
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下面各题怎样简便就怎样计算． 3.2×2.5×12.5 0.25÷（ 4 5 +0.2）- 1 4 7÷〔 4 11 ×
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4分钟口算 2.5×4= 505×2= 0.3×[1/3]= [1/5]÷0.5= 4.8-[4/5]= 1.25+3[