无锡市玉祁初一新生暑假作业数学 3页
信息发布者：Sarah789
一、
1. 5/6 16/15
20/21 7/12
2. 0.36 25
3. 550 330
4. 2500
5. 20%
6. 70
7. 22.5
8. 35
二、
1. B
2. D
3. B
4. A
1. 360 63 400 100 80.14
294 727 0.42 5/6 4.6
8 9/20 0 7/2 1/4
14/7 0.2 80 0.4 1
2.
=23.19+2.91+2.4+14.6
=26.1+17
=43.1
=2.6×100
=260
=24×3/8+24×5/6
=24
=(7/9+2/9)×5/11
=5/11
=18.5-10.4÷1.3
=18.5-8
=10.5
=21÷11/15÷9/11
=21×15/11×11/9
=35
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