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Fifty problems of vertical calculation in the fifth grade of primary school mathematics. Thank you very much.
102×4.5

7.8×6.9+2.2×6.9

5.6×0.25

8×(20- 1.25) 1.65×99+ 1.65

27.85-(7.85+3.4)

48× 1.25+50× 1.25×0.2×8

7.8×9.9+0.78

( 10 10+309+4+68 1+6)× 12

3×9 146×782×6×854

5. 15×7/8+6. 1-0.60625

920- 1680÷40÷7

690+47×52-398

148+3328÷64-75

360×24÷32+730

2 100-94+48×54

5 1+(2304-2042)×23

42 15+(436 1-7 16)÷8 1

(247+ 18)×27÷25

36-720÷(360÷ 18)