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The answer to the first volume of the math workbook
(It's seven bags)

50 times 7=350

(-2)+(-3)+(-5)+(-3)=- 13

1+5+6= 12

13 is greater than 12, 13- 12= 1.

350- 1=349 (kg)

349 times 4= 1396 (yuan)

Answer: * * * 349 Jin, a *** 1396 yuan.

Hope to adopt! Thank you.

97+95+86+96+94+93+87+88+98+91= 925 (kg)

90 times 10=900 (kg)

925 is greater than 900

925-900=25 (kg)

Answer: * * * 925 kg, exceeding the standard by 25 kg.

Hope to adopt! Thank you.