Word Problems
Addition and Subtraction
Mystery Number Word Problems
Less than, Equal to, and Greater than
Mystery Number
100

13 children are on the roller coaster. 3 adults are on the roller coaster. How many people are on the roller coaster? 

Explain your answer. 

16 because…

100

18+3=

28+2=

21 and 30

100

9 dogs were playing at the park. Some more dogs came to the park. Then, there were 11 dogs. How many more dogs came to the park?

Explain your answer.

2 because…

100

<,=, or > 

13 __ 1 ten 3 ones

=

100

Find the mystery number.

10 more than 29 is ___.

39 

200

William has saved $61 and gets $8 as an allowance. How much money does William have now?

Explain your answer.

$69 because…

200
40-30=

28-5=

10 and 23

200

16 strawberries are in a basket for Peter and Julio. Peter eats 8 of them. How many are there for Julio to eat?

Explain your answer.

8 because… 

200

<,=, or >

3 tens __ 25 ones 

>

200

Find the mystery number.

20 more than 12 is ___. 

32

300

Ben has 6 baseball practices in the morning this month. If Ben also has 6 baseball practices in the afternoon, how many baseball practices does Ben have in total this month? 

Explain your answer.

12 because…

300

28+10=

15+15=

38 and 30

300

Some yellow beads were on Tamra’s bracelet. After she put 14 purple beads on the bracelet, there were 18 beads. How many yellow beads did Tamra’s bracelet have at first? 

Explain your answer.

4 because…

300

<,=, or > 

1 ten 14 ones __ 2 tens 4 ones

=

300

Find the mystery number.

10 less then 29 is ___.

19

400

Mark says that 34 is the same as 2 tens and 14 ones. Suki says that 34 is the same as 34 ones. Are they correct? 

Explain your answer.

Yes they are the same because…


400

28+12=

19+14=

40 and 33

400

Jude read some pages on Wednesday. On Thursday, he read 8 pages. He reads 12 pages total on Wednesday and Thursday. How many pages did he read on Wednesday? 

Explain your answer.

4 because…

400

<,=, or > 

33 __ 2 tens 12 ones 

>

400

Find the mystery number. 

20 less than 45 is ___.

25

500

On Monday, Jude Read 11 pages, and on Tuesday he read 8 pages. How many pages did he read in all? 

Explain your answer.

19 because… 

500

16+18=

28+6=

34 and 34
500

Friday night, Jude read 13 pages before his mom told him to take a bath. After his bath, he reads some more pages. Jude read a total of 20 pages. How many pages did Jude read after his bath? 

Explain your answer.

7 because…

500

<,=, or >

26 __ 1 ten 25 ones

<

500

Find the mystery number.

100 less then 250 is ___.

150

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