4×3= 5×4= 6×2= 30÷5=
5÷5= 6+7= 14-8= 36÷6=
42-(8+34)= 81-7-70= 6×5-5= 56-28+34=
分析:根據(jù)乘法口訣以及整數(shù)加減法口算的方法進行計算.
解答:解:
4×3=12 5×4=20 6×2=12 30÷5=6
5÷5=1 6+7=13 14-8=6 36÷6=6
42-(8+34)=0 81-7-70=4 6×5-5=25 56-28+34=62.
點評:本題考查了簡單的計算,關鍵是熟練運用乘法口訣計算乘除法.
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