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Find the answer to the fifth grade math test paper in primary school (see supplementary question for details)
1, height =120 ÷ 4-15-7 = 8cm;

2.50× 8× 3.5 ÷ 80 =17.5 ≈18 days;

3. The width and height of a cuboid = 60 ÷ 4 ÷ 5 = 3cm;

Length of cuboid = 3+5 =-8cm;

Original cuboid volume =8×3×3=72cm? ;

4, the volume of water =600ml

Potato volume = 800-600 = 200cm?

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