②22÷3
③20.2÷6
④28.28÷4
①15.3÷3 -(45.6-42.6)
②8×0.4×1.25×5
③(5.6+7.8)×(9.6-2.4)
④12+[5.5×(3.1-2.7)]
⑤2.5×3.7×4
⑥3.2×102
⑦8.9×6-3.9×6
5.6÷0.7= 4.8×0.2= 2.5×0.4= 2.7+83=
0.25×6= 8×1.2= 7.2÷4= 0.26÷0.01=
4.5×0.02= 6.2+3.8= 19.8×5≈ 80.7÷20.3≈
①
②
③0.79×99+0.79
④3.8×97+0.38×30
⑤
⑥(﹣)×9×12
①4.7﹣0.7×1.5﹣0.75
② ÷[( + )× ]
③25×4.9×4
④35×25×( )
⑤5600÷(7×25)
⑥13×(10+0.2)