Lesson 16 closure review

The custodian put away 24 chairs, leaving 52 chairs in the room. How

many chairs were in the room before the custodian put some away?

Write a subtraction formula (s - a = l) to solve the problem.

• 24 - a = 52

• 24 - 52 = l

• s - 24 = 52

• 24 + 52 = l

A librarian removed 15 books from a shelf, leaving 85 books. How many books were on the shelf initially?

Write a subtraction formula (b - r = l) to solve the problem.

• 15 + 85 = l

• b - 15 = 85

• 15 - r = 85

• 85 - b = 15

There were 40 apples in a basket. After giving away some, 25 apples remained. How many apples were given away?

Write a subtraction formula (a - g = r) to solve the problem.

• g - 25 = 40

• 40 - g = 25

• 40 + 25 = r

• 25 - a = g

A teacher had 60 markers. After distributing some to students, 45 markers were left. How many markers were distributed?

Write a subtraction formula (m - d = l) to solve the problem.

• 60 - d = 45

• d - 45 = 60

• 45 - m = d

• 60 + 45 = l

A farmer had 100 oranges. After selling some, 70 oranges were left. How many oranges were sold?

Write a subtraction formula (o - s = l) to solve the problem.

• 100 + 70 = l

• 100 - s = 70

• s - 70 = 100

• 70 - o = s

There were 90 pencils in a box. After using some, 55 pencils remained. How many pencils were used?

Write a subtraction formula (p - u = r) to solve the problem.

• 55 - p = u

• 90 + 55 = r

• 90 - u = 55

• u - 55 = 90

A baker baked 120 cookies. After selling some, 95 cookies were left. How many cookies were sold?

Write a subtraction formula (c - s = l) to solve the problem.

• 120 - s = 95

• s - 95 = 120

• 120 + 95 = l

• 95 - c = s

Cullen had $28. After he spent $12, how much money did Cullen have? s-a-l

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After losing 234 pounds, Jumbo the elephant still weighed 4,368 points. How much did Jumbo weigh before he lost the weight?

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Four hundred runners started the race, but some runners dropped out along the way. If 287 runners finished the race, then how many runners dropped out of the race?

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