240÷4= 220×40= 93÷3= 30×15=
0÷180= 2000÷4= 50×60= 880÷4=
23×4= 90×11= 550÷5= 25×40=
86÷9≈ 432÷6≈ 41×79≈ 83×19≈
93÷3= 12×20= 300÷5= 70×40=
34×20= 240÷3= 1-0.4= 4.2+0.5=
①0.3+4.6=
②28×20=
③81×10=
④360÷4=
⑤11-0.8=
⑥350÷7=
⑦301÷6≈
⑧98×18≈
630÷7= 15×20= 303÷3= 80×50=
1- = 5×7÷5×7=
2.5+0.3= 6.7-2.4= 0.8+0.7= 4.5-2.1= 1.3-0.8=
3.2-0.4= 1.5+6.9= 5.4-0.9= 3.6+0.8= 4.5+2.4=
0.7+0.3= 4.5+1.5= 2-0.7= 5.9-3.9=
2.2+3.3= 3.6+2.1= 2.2-0.5= 3.6-1.2=
40×60= 26×20= 25×400= 450÷9=
39×0×12= 67+16= 899×9≈ 24×5×2=
0.6+4.5= ﹣ = 2÷ = 2.5:6=
125%×8= 18÷54= 0.5×2.4= : =