Estimate the values of the following.
1) 89+75+77+79+80+83+83+78
2) 12.04+11.53+8.92+9.18+10.03+12.53+11.99
3) 53.1+51.9+48.7+50.2+49.2+50.6+51.1+52.4+51.7+52.8
4)161.46x0.49
5)305.73x0.33
6)179.8x0.68
easy f2 mathz plz help
2007-11-14 4:28 am
回答 (1)
2007-11-14 4:35 am
✔ 最佳答案
1) 89+75+77+79+80+83+83 +78= 90+80+80+80+80+80+80+80
= 650
2) 12.04+11.53+8.92+9.1 8+10.03+12.53+11.99
= 12+12+9+9+10+13+12
= 77
3) 53.1+51.9+48.7+50.2+ 49.2+50.6+51.1+52.4+ 51.7+52.8
= 53+52+49+50+50+51+51+52+52+53
= 513
4)161.46x0.49
= 160x0.5
= 80
5)305.73x0.33
= 310x0.3
= 93
6)179.8x0.68
= 180x0.7
= 126
收錄日期: 2021-04-13 14:29:21
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