问题 解答题
12×3=60÷3=21×3=84÷4=24+40=
2800÷7=38-9=24×3=4×70=4000÷5=
3600×0=4×25=560÷7=14×5=48÷4=
77÷7=100-100÷5=1+8×500=30÷6×14=3×7÷3×7=
答案

12×3=36,60÷3=20,21×3=63,84÷4=21,24+40=64,
2800÷7=400,38-9=29,24×3=72,4×70=280,4000÷5=800,
3600×0=0,4×25=100,560÷7=80,14×5=70,48÷4=12,
77÷7=11,100-100÷5=80,1+8×500=4001,30÷6×14=70,3×7÷3×7=49.
故答案为:36,20,63,21,64,400,29,72,280,800,0,100,80,70,12,11,80,4001,70,49.

填空题
单项选择题