①36.3-17.69
②100÷25×4
③24×25
④35×201
⑤39×99+39
⑥47.2+(23.9-12.8)
⑦6.37+4.9+5.1+3.73
⑧720÷45+180÷45
⑨43000÷125÷8
⑩30.7-(2.07+1.3)-6.63
0.7+2.61.9+2.6
2.8+3.63.6+2.8
4-3.5+0.54-(3.5+0.5)
7.5-3.3+0.57.5-0.5+3.3
12.78+5.2+4.8
18.17-2.9-3.1
9.85+4.7-9.85+6.3
27.3+73.2+72.7 7.6-5.59+2.04 43.25-10.4-3.25
3.8+1.37+6.2+12.63 76.38-27.74-12.36
①38.17+0.15+71.83
②6.67+5.2+1.45
③21.33-4.67+8.12
④14.12-7.42-5.58
⑤14.6-3.98+5.4-0.02
⑥17.65-(0.65+9.9)
①32.05-7.46-6.54
②1-0.92+10.6
③29.95+14.3-8.25
④12.13-7.56+3.87-4.44
5.27-(0.27+3.26)=5.27
4.8+1.99=4.8(2 )
废旧物品
饮料罐
废旧纸张
废旧电池
矿泉水瓶
质量/千克
25.3
43.26
5.71
6.74