题干
口算.
65×50=____ 29×50=____ 80×50=____ 47×50=____ 19×60 = ____
43×60=____ 70×60=____ 28×60=____ 40×50=____ 40×70=____
40×25= ____ 40×90=____ 40×31=____ 40×62=____ 40×80=____
40×46=____ 14×3=____ 35×20=____ 12×5=____ 21×70=____
8×50=____ 11×80=____ 120×30=____ 160×50=____ 40×50=____
答案(点此获取答案解析）
3250,1450,4000,2350,1140,2580,4200,1680,2000,2800,1000,3600,1240,2480,3200,1840,42,700,60,1470,400,880,3600,8000,2000
