Addition
Subtraction
Estimation
Word Problems
Surprise!
100
3,956 + 5,482 =
9,438
100
8,743 - 67 =
8,676
100
Estimate the difference by rounding each number to the nearest hundred and then subtracting.
752 − 181
800 - 200 = 600
100
The Colosseum in Rome, Italy, is about 1,950 years old. The Giza Pyramids in Cairo, Egypt, are about 2,550 years older. How old are the Giza Pyramids?
Draw a bar model, then solve.
Comparison bar model- check with teacher
The pyramids are 4,500 years old.
100
716 - 208 =
508
200
4,984 + 2,427 =
7,411
200
7,006 - 5,489 =
1,517
200
Estimate the difference by rounding each number to the nearest ten and then subtracting.
417 − 221
420- 220 = 200
200
Isabelle is allowed 300 minutes of TV time each week. On Sunday, she watched TV for 90 minutes. On Monday, she watched TV for 60 minutes. After Monday, how much TV time did Isabelle have left for the week?
Draw a bar model, then solve.
Part Part Whole bar model: check with teacher for answer
Isabelle has 150 minutes if TV time left.
200
Clare bought a bag of fruit candies and divided them up by flavor. She had 421 watermelon candies, 56 sour apple candies, and 8,234 raspberry candies. How many total candies were in the bag?
Draw a bar model, then solve.
Part Part Whole
There were 8,711 candies in the bag.
300
1,309 + ? = 5,258
3,949
300
? - 5,855 = 3,145
9,000
300
Estimate the difference by rounding each number to the nearest hundred and then subtracting.
4,857 − 1,756
4,900- 1,800 = 3,100
300
Liam collected 2,324 coins. He collected 489 more coins than Camilla. How many coins did they collect altogether?
Draw a bar model, then solve.
Comparison bar model- check with teacher
They collected 4,159 coins altogether.
300
Complete the number pattern:
____ 2,867 _____ 4,293 5,006 _____
2,154 2,867 3,580 4,293 5,006 5,719
400
? + 87 = 9,063
8,976
400
6,742 - ? = 5,778
964
400
Estimate the difference by rounding each number to the nearest hundred and then subtracting.
9,886 − 7,672
9,900 - 7,700 = 2,200
400
In January, there were 4,788 migratory shore birds on an island. In February, 3,843 birds left the island. At the end of March, only 623 birds remained.
How many birds left the island in March?
Draw a bar model, then solve.
Comparison bar model- check with teacher
322 birds left in March.
400
Liz paid $4,500 for her first car. When she bought her second car, she paid $7,995 for it. How much more money did she pay for her second car than her first car?
Draw a bar model, then solve.
Comparison- check with teacher
She paid $3,495 more for her second car.
500
_, 1 3 7
+ 2, 5 6 _
__________
4, 7 _ 1
2, 137 + 2,564 = 4,701
500
6, 3 _ 7
- _, 4 3 8
___________
1, _ 2 9
6, 367
- 4,438
____________
1, 929
500
Which addition problem has a sum of about 560?
A. 197 + 373
B. 427 + 159
C. 188 + 369
D. 378 + 173
C. 188 + 369
500
Heather wants to buy a game console that costs $617. If she buys it online, it will cost $489. Estimate the amount of money she will save if she buys it online.
Round to nearest ten for most accurate estimate: $130
Round to nearest hundred: $100
500
Fill in the missing number.
_, _ _ _
+ 4 6 0
___________
10, 0 4 8
9,588