Estimating Sums & Differences: Real World Math Fun!

A bakery made 150 cookies in the morning and 75 cookies in the afternoon. How many cookies did they make in total? Estimate the total by rounding.

• 300

• 350

• 200

• 250

Sarah has 120 marbles. She gave 45 marbles to her friend. How many marbles does Sarah have left? Use a number line to help you visualize the subtraction.

• 75

• 90

• 100

• 65

A farmer has 240 apples. He wants to pack them into boxes that hold 30 apples each. How many boxes does he need? Estimate the number of boxes by rounding.

• 8

• 10

• 12

• 6

In a school, there are 350 students. If 125 students are absent, how many students are present? Use addition to find the answer and estimate the difference.

• 200

• 150

• 225

• 300

A toy store sold 85 toys on Monday and 120 toys on Tuesday. How many toys did they sell in total? Estimate the total by rounding to the nearest ten.

• 200

• 180

• 220

• 210

A library has 500 books. If 150 books are checked out, how many books remain in the library? Use a number line to visualize the subtraction.

• 250

• 300

• 400

• 350

A pizza shop made 200 pizzas. If they sold 75 pizzas on Friday and 50 on Saturday, how many pizzas are left? Estimate the remaining pizzas by rounding.

• 100

• 25

• 50

• 75

Emma has 60 stickers. She buys 25 more stickers. How many stickers does she have now? Use addition and estimate the total by rounding.

• 85

• 90

• 100

• 75

A gardener planted 120 flowers. If 30 flowers died, how many flowers are still alive? Use a number line to help with the subtraction.

• 120

• 60

• 100

• 90

A class collected 250 cans for a food drive. If they collected 75 more cans the next week, how many cans do they have in total? Estimate the total by rounding.

• 250

• 325

• 400

• 300