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24×11= 47×11= 35×11= 78×11=
252÷3= 125÷5= 3.4+2.5= 14.6-1.6=
分析:根据整数、小数加法、减法、乘法的计算法则,直接进行口算.
解答:
解:24×11=264; 47×11=517; 35×11=385; 78×11=858;
252÷3=84; 125÷5=25; 3.4+2.5=5.9; 14.6-1.6=13.
点评:此题考查的目的是牢固掌握整数、小数四则运算的计算法则,并且能够正确熟练地进行口算,提高口算能力.
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