直接写得数= == == == == == == ==
用竖式计算下面各题 109×7= 380×8=
800÷8= 720÷9= 100÷10= 200÷5= 720+80= 630+70= 520﹣80= 546﹣46= 75÷5= 720﹣400= 70×5= 50×4=．
口算题． 1000﹣60= 50×20= 250÷5= 680÷4= 47×3= 30×50×0= 260÷1= 290×30=
23+4+9= 81﹣7﹣30= 54+20+3= 93﹣70+60= 17+6+8= 43﹣8﹣30= 60+38﹣90= 50+27﹣8= 68÷4= 840÷4= 220×4= 180÷3= 91÷7= 280÷2= 200×9= 0÷180=
笔算 1293×8 352×2 121×9 3143×3 1235×3．
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