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Help with 11,12,13,14

Help with 11,12,13,14-example-1

1 Answer

5 votes
estimations :
11. 15 + 25 = 40
12. 9 + 3 + 4 = 16
13. 195 - 12 = 183
14. 289 - 67 = 222
User Elmotec
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