问题
解答题
脱式计算
60×7+148
550÷5×2
801÷(3×3)
157-23×4
78÷3÷2
(183+246)÷3.
答案
(1)60×7+148
=420+148
=568;
(2)550÷5×2
=110×2
=220;
(3)801÷(3×3)
=801÷9
=89;
(4)157-23×4
=157-92
=65;
(5)78÷3÷2
=78÷(3×2)
=78÷6
=13;
(6)(183+246)÷3
=183÷3+246÷3
=61+82
=143.