Ten More
Mental Math!
Add or Subtract
Add or Subtract
100

 38 + 10 = 

48 

100

30 + 29

59

100

Alexis had 53 cookies. She ate 20 of them. How many cookies does Alexis have left?

33 cookies

100

Max made 89 cupcakes. Her family ate 60 cupcakes. How many cupcakes does she have now?

29 cupcakes

200

24 + 10= 

34

200

40 + 39

79

200

Michael has 23 markers. Jose has 16 more markers than Tim. How many markers does Jose have?

Write a number sentence that shows how many markers Jose has.

 Michael    23  

 Jose     + 16 

                39


Jose has 39 markers.

200

The third-grade class had 78 candy bars. They sold 55. How many candy bars do they have left?

23 candy bars

300

89 + 10= 

99

300

25 + 26

51

300

There are 34 children on a bus. Some more people get on the bus. Now there are 68 children on the bus. How many kids got on the bus?

34 kids

300

There were some people on a bus. 22 people got off the bus. Now there are 14 people on the bus. How many people were on the bus to start?

36 people

400

43 +10 = _?_  -  10 

53

400

45 + 46

91
400

Sara has 25 books. She gave some away to her sister. Now she has 45 books. How many books did she give to her sister?

20 books

400

Mrs. Smith's class has 39 children. Mrs. White's class has 16 children. How many more children does Mrs. Smith have than Mrs. White?

23 children

500

There were 50 toys at the shop. 

On Monday,  30 more toys were ordered.

On Tuesday, 10 toys were sold.

How many toys are there now?

M      50                          T    80

     + 30   (more)                - 10  (sold)

         80                               70


There are 70 toys now.

500

Mrs. Shaw wants to sell 100 tickets to the variety show. 

On Monday she sold 20 and on Tuesday she sold 30. 

How many more tickets will she need to sell if she wants to sell 100?

M    20 tickets

T  + 30 tickets 

      50 tickets

___ + 50 = 100

50 more tickets

500

The band wants to sell 350 tickets to the concert. They sold 100. How many more tickets will they need to sell?

250 tickets more to sell

500

The band wants to sell 400 tickets to the concert. They sold 250. How many more tickets will they need to sell?

150 tickets more to sell