用简便方法计算.332×4+68×4 15×4×25 &nbs...
答案:1 悬赏:60 手机版
解决时间 2021-04-20 02:42
- 提问者网友:两耳就是菩提
- 2021-04-19 02:38
用简便方法计算.332×4+68×4 15×4×25 &nbs...
最佳答案
- 五星知识达人网友:鸠书
- 2021-04-19 02:49
①332×4+68×4
=(332+68)×4
=400×4
=1600
②15×4×25
=15×(4×25)
=15×100
=1500
③78×101
=78×(100+1)
=78×100+78×1
=7800+78
=7878
④3005-287-113
=3005-(287+113)
=3005-400
=2605
⑤125×72
=125×(8×9)
=(125×8)×9
=1000×9
=9000
⑥61+52-61+52
=(61-61)+(52+52)
=0+104
=104
⑦4.26×100-4.26×100
=4.26×(100-100)
=4.26×0
=0
⑧125×8÷125×8
=125÷125×8×8
=1×8×8
=64.
=(332+68)×4
=400×4
=1600
②15×4×25
=15×(4×25)
=15×100
=1500
③78×101
=78×(100+1)
=78×100+78×1
=7800+78
=7878
④3005-287-113
=3005-(287+113)
=3005-400
=2605
⑤125×72
=125×(8×9)
=(125×8)×9
=1000×9
=9000
⑥61+52-61+52
=(61-61)+(52+52)
=0+104
=104
⑦4.26×100-4.26×100
=4.26×(100-100)
=4.26×0
=0
⑧125×8÷125×8
=125÷125×8×8
=1×8×8
=64.
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