给采纳吗?
20×[(2.44-1.8)÷0.4+0.15] 28-(3.4+1.25×2.4) 2.55×7
1个回答
相关问题
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(1)4.5×10.2 (2)(5.6+0.28)÷0.7 (3)51.6÷[(5.4-3.25)×0.8] (4)1.
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直接写出得数 （1）8.4÷4= 0.36×3= 18.36÷0.6= 3.2×1.25×0.25= （2）4.28+1
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3 4 × 8 15 = 3 7 20 ÷3.35 = 1 2 3 -0.5 = 3 4 + 1 4 ×5 = 1.2×
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口算 5×4=6.4÷0.8=7.2×0.01=10÷4=0.36×2=1÷0.125=0.25×8=8.1÷0.3=0
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1.8×5.46+18×45.4 0.38×102 32÷0.25 15.92-7.56+2.08-2.44 20.06
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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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直接写得数4.8×0=2.4×10=4.2÷0.7=3.6÷1.2=1.2×5=6.3÷0.7=15×0.6=1-0.0
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计算（1）1.3× 1 4 - 1 2 ×0.25+0.2÷4（2）[（ 1 1 3 - 8 15 ) ×75%+ 1
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5×＋7.4＝31.80.7×＋3.4×＝37.72（×－12）÷4＝4.55×（×＋2.4）＝25.53.2×＋1.8