600道口算题

问题描述:

600道口算题
2.

17×40=680,100-63=37,3.2+1.68=4.88,2.8×0.4= 1.12 14-7.4=6.6,1.92÷0.04=48,0.32×500=160,0.65+4.35= 5 10-5.4=4.6,4÷20=0.2,3.5×200=700,1.5-0.06=1.44 0.75÷15=0.05,0.4×0.8=0.32,4...