Mental Math - Addition
Mental Math Subtraction
Word Problems
Estimation
Patterns
100

45+27

72

100

52-18

34

100

If Sarah has 12 apples and buys 15 more, how many apples does she have now?

27 apples

100

Round 34 to the Nearest 10 

30

100

What is the next number in the pattern: 4, 8, 12, 16, __?

20

200

123+57

180


200

96-37

59

200

A box has 37 pencils. If 12 pencils are used, how many are left in the box?

25

200

Round 78 to the Nearest 10 

80

200

Complete the sequence: 30, 27, 24, 21, __?

18


300

564+349

913


300

865-756=

100

300

There are 482 seats in a theater. If 156 people leave during intermission, how many people are still in the theater?

326


300

What place value is the 7 in 271

tens

300

100, 90, 80, 70, __?

60

400

820+127

947

400

1,500-789

711

400

A baker makes 340 cupcakes in the morning and 275 more in the afternoon. If she sells 429 cupcakes, how many does she have left?

186


400

Write this number in expanded form:

421

400 + 20 + 1

400

25, 50, 75, __, 125.

100

500

1,234+678

1,912

500

2,000-867

1,133


500

A bus has 425 passengers. At the next stop, 158 passengers get off and 243 get on. How many passengers are on the bus now?

510

500

Estimate 348 + 279 by rounding to the nearest hundred.

600

500

Find the missing number: 100, 80, 60, __, 20.

40