问题 解答题
口算 
25+64=78-36=2100+500=0+98=
32×5=2×23=26+41=45÷3=
66÷6=39+38=72-23=1740-800=
72÷4=32×3=100-54=24÷2=
答案

25+64=89,78-36=42,2100+500=2600,0+98=98,
32×5=160,2×23=46,26+41=67,45÷3=15,
66÷6=11,39+38=77,72-23=49,1740-800=940,
72÷4=18,32×3=96,100-54=46,24÷2=12.
故答案依次为:89,42,2600,98,160,46,67,15,11,77,49,940,18,96,46,12.

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