用简便方法计算下面各题. 198+265+202 484-54-146 250×56×4 2400÷25÷4 88×125 99×

2025-03-13 04:41:53
推荐回答(2个)
回答1:

解:(1)198+265+202
=198+202+265
=400+265
=665

(2)484-54-146
=484-(54+146)
=484-200
=284

(3)250×56×4
=250×4×56
=1000×56
=56000

(4)2400÷25÷4
=2400÷(25×4)
=2400÷100
=24

(5)88×125
=(80+8)×125
=80×125+8×125
=10000+1000
=11000
(6)99×66+66
=99×66+66×1
=66×(99+1)
=66×100
=6600

回答2:

搜一下:用简便方法计算下面各题.
198+265+202
484-54-146
250×56×4
2400÷25÷4
88×125
99×