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055-level math oral calculation book, volume 2, page 43.
The answer on page 43 of the second volume of the fifth grade math oral calculation book.

17×40=680,

100-63=37,

3.2+ 1.68=4.88,

2.8×0.4= 1. 12

14-7.4=6.6,

1.92÷0.04=48,

0.32×500= 160,

0.65+4.35= 5

10-5.4=4.6,

4÷20=0.2,

3.5×200=700,

1.5-0.06= 1.44

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