2.1.1 Addition and Subtraction Equations − Practice
1. Solve the equation m − 11 = 59.
2. Solve the equation 42 = m − 32. Check your answer.
3. Solve the equation b + 11 = 24. Check your answer.
4. Solve the equation 143 = w + 33. Check your answer.
5. Mary baked 34 muffins on a Sunday. She gave 17 of them to her neighbor. Write and solve an equation to find the number of muffins she had left.
6. A shop owner sold 27 books on Friday. This was 9 more than the number of books he sold on Thursday. Write and solve an equation to find the number of books he sold on Thursday.
7. A farmer’s total payment for tools and compost over the course of two years is $25,394. Write and solve an equation to find the payment for the second year if the first year’s payment is $10,955.
8. A toy company’s total payment for salaries for the first two months of 2005 is $23,894. Write and solve an equation to find the salaries for the second month if the first month’s salaries are $12,455.
9. In 2002, the temperature on the first day of summer was 86°F. This is 6°F less than it was on the first day of summer the previous year. What was the temperature on the first day of summer in 2001?
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