用简便方法计算95+12+88 720÷45 &...
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解决时间 2021-01-19 08:16
- 提问者网友:最美的风景
- 2021-01-18 22:13
用简便方法计算95+12+88 720÷45 &...
最佳答案
- 五星知识达人网友:玩世
- 2021-01-18 22:34
(1)95+12+88
=95+(12+88)
=95+100
=195;
(2)720÷45
=720÷(9×5)
=720÷9÷5
=80÷5
=16;
(3)16×25
=(4×4)×25
=4×(4×25)
=4×100
=400;
(4)326+198
=326+(200-2)
=326+200-2
=524;
(5)486-108
=486-(110-2)
=486-110+2
=376+2
=378.
=95+(12+88)
=95+100
=195;
(2)720÷45
=720÷(9×5)
=720÷9÷5
=80÷5
=16;
(3)16×25
=(4×4)×25
=4×(4×25)
=4×100
=400;
(4)326+198
=326+(200-2)
=326+200-2
=524;
(5)486-108
=486-(110-2)
=486-110+2
=376+2
=378.
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