简便计算 73X2.9-58+7.1x53 31X68+62x16 4.26x32.7+35.2×
答案:1 悬赏:80 手机版
解决时间 2021-02-10 06:59
- 提问者网友:刺鸟
- 2021-02-09 14:20
简便计算 73X2.9-58+7.1x53 31X68+62x16 4.26x32.7+35.2×
最佳答案
- 五星知识达人网友:往事隔山水
- 2021-02-09 14:42
73X2.9-58+7.1x53
=73*2.9-20*2.9+7.1*53
=2.9*(73-20)+7.1*53
=53*2.9+53*7.1
=53*(2.9+7.1)
=53*100
=5300
31*68+62*16
=31*68+31*32
=31*(68+32)
=31*100
=3100
4.26x32.7+35.2×3.27+0.222X327
=32.7*4.26+32.7*3.52+32.7*2.22
=32.7*(4.26+3.52+2.22)
=32.7*10
=327
=73*2.9-20*2.9+7.1*53
=2.9*(73-20)+7.1*53
=53*2.9+53*7.1
=53*(2.9+7.1)
=53*100
=5300
31*68+62*16
=31*68+31*32
=31*(68+32)
=31*100
=3100
4.26x32.7+35.2×3.27+0.222X327
=32.7*4.26+32.7*3.52+32.7*2.22
=32.7*(4.26+3.52+2.22)
=32.7*10
=327
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