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Jiangsu education printing plate fifth grade first volume mathematics supplementary exercise p 17 page answer.
1: ⑴ 600 48

⑵ 1

⑶ 4 10

⑷ 24

⑸ 4

2: 20× 30 ÷ 2 = 300 square meters

300× 500 =150000g

=150kg

3: 90÷ 15×2= 12

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