Three-Digit Change Problems: Estimating Sums & Differences

Liam has 245 marbles. He gives away some marbles and now has 178 marbles left. How many marbles did Liam give away?

• 100

• 67

• 50

• 80

Emma has 312 stickers. She buys some more stickers and now has 450 stickers. How many stickers did Emma buy?

• 150

• 200

• 138

• 120

A store had 567 toys. They sold some toys and now have 432 toys left. How many toys were sold?

• 100

• 150

• 200

• 135

Noah had 823 baseball cards. He lost some cards and now has 675 cards. How many baseball cards did Noah lose?

• 200

• 148

• 120

• 175

Sophia has 456 books. She donates some books and now has 389 books left. How many books did Sophia donate?

• 45

• 100

• 78

• 67

A bakery made 215 cupcakes. They sold some and now have 150 cupcakes left. How many cupcakes were sold?

• 65

• 100

• 50

• 80

Oliver has 678 coins. He spends some coins and now has 532 coins left. How many coins did Oliver spend?

• 146

• 120

• 178

• 200

A library had 890 books. They added some new books and now have 950 books. How many books did they add?

• 80

• 50

• 70

• 60

Mia had 430 crayons. She gave some crayons to her friend and now has 385 crayons left. How many crayons did Mia give away?

• 60

• 30

• 45

• 50

A farmer had 512 apples. He sold some apples and now has 467 apples left. How many apples did the farmer sell?

• 30

• 60

• 45

• 50