24×5 = 180÷6 = 96÷3 = 7200÷8= 454÷5≈
23×8 = 560÷7 = 804÷2 = 20×7 = 631÷7≈
⑴186÷3×41 ⑵(693-234)÷9 ⑶721+37×54
41×34≈
489÷8≈
209÷3≈
28×39≈
735÷7÷5
327﹣27÷3
5×16×4
(179+206)÷5
3.2-2.5= 50×60= 540÷9= 862÷2= 10-0.8=
18×50= 7.2+2.9= 250×4= 47×51≈ 267÷3≈
6.3+2.7= 52×20= 4200÷6= 0÷420= 72×49≈
7.8-3.6= 241÷6= 400÷8= 180×5= 281÷9≈
22×30= 609÷3= 3.7+2.1= 42×39≈
240÷8= 70×90= 8.9-0.5= 419÷6≈