|
(1)69×5=345
(2)80×54=432
(3)9×13=117
(4)128×9=1152
(5)206×8=1648
(6)15×5×50 =75×50 =3750; (7)44×4+6 =176+6 =182; (8)(710+230)×8 =940×8 =7520; (9)(330+230)÷8 =560÷8 =70; (10)(540-370)×6 =170×6 =1020; (11)33×8÷6 =264÷6 =44; (12)745+625÷5 =745+125 =870. |
关注公众号回复:奥数答案
即可免费获得密码查看答案
