口算:24÷8= 40÷5= 500+300= 450+500= 360﹣80=50+800= 9×6= 72÷8= 28÷7= 5×9=360﹣30= 730﹣700= 18÷3= 3400﹣300=
用竖式计算(前面带星号的要验算) 7.02﹣4.36 14.53+5.67 ★6.47+0.58.
用竖式计算,第二小题要验算. 38.74+7.45= 21.8﹣9.71=验算 4.078+24.89=
竖式计算我最棒. 0.6+1.54.6+0.8 6.8﹣2.5 1.2﹣0.3 1﹣0.3 1.9+0.4 4.5﹣2.7 7.3﹣4.9.
列竖式计算: ①42.8+8.39 ②60﹣45.18.
列竖式计算.打★的题目请验算. 16.4﹣7.8= ★823÷8= ★56×72= 782÷6= 1.6+8.7= 30×45=