Animal Adventures
School Supplies
Fun & Games
Mystery Math
Challenge
100

There are 4 kittens in a shelter. 3 kittens were dropped off. How many cats are there now?

7 cats

4 + 3 = 7

100

Mia has some books. She gets 5 more books and now has 13. How many books did she start with?

8 books

13 - 5 = 8

100

Colt has 12 balloons. Evan pops 5 balloons. How many balloons does Colt have left?

7 balloons

12 − 5 = 7

100

Some students are standing. 3 more students join them. Now there are 9 students. How many students were standing at the beginning?

6 students

9 - 3 = 6

100

There are 15 fish swimming in a fish tank. Some fish are red, and 8 fish are blue. How many fish are red?

BONUS CHALLENGE (+50 POINTS): Can your team write a different equation using the same three numbers that also gives a correct answer?

7 fish

15 - 8 = 7 

BONUS EQUATIONS

8 + 7 = 15

7 + 8 = 15

15 − 7 = 8

200

There are 8 ducks swimming in a pond. Five more ducks fly into the pond. How many ducks are in the pond now?

13 ducks

8 + 5 = 13

200

Lily had some pencils in her pencil box. She gave 6 pencils to her friends. Now she has 9 pencils left. How many pencils did she have at the beginning?

15 pencils

9 + 6 = 15

200

Emma has 8 red balloons and 6 blue balloons for her birthday party. How many balloons does Emma have altogether?

14 balloons

8 + 6 = 14

200

There are 14 dinosaurs. Sydney gives some away. 8 dinosaurs are left. How many dinosaurs did Sydney give away?

6 dinosaurs 

14 - 6 = 8 

200

Mason had 16 toy cars. He gave away some to Wyatt. Now he has 9 left. How many did he give away? Explain your answer.

7 cars

16 - 7 = 9

300

There are 6 birds on the boardwalk. Some more birds fly in. Now there are 15 birds. How many birds flew in?

9 birds

6 + 9 = 15

300

Noah had some stickers. He gave away 7 stickers to Lucy and has 8 left. How many stickers did Noah start with?

15 stickers

7 + 8 = 15

300

Ava had 16 cookies. She gave some away and has 9 left. How many cookies did she give away?

7 cookies

16 - 9 = 7

300

There are 11 cookies on a plate. Jake eats 4 cookies. How many cookies are left?

7 cookies

11 − 4 = 7

300

Mrs. Thomas had 18 stickers. She gave 6 away, then got 4 more. How many does she have now?

16 stickers

18 - 6 = 12

12 + 4 = 16

400

Austin had some toy cars. He gave 7 toy cars to Owen. Now he has 9 toy cars left. How many toy cars did Austin have at the beginning?

BONUS CHALLENGE (+50 POINTS): Draw a picture that shows how Austin's toy cars were divided into two groups.

16 toy cars

7 + 9 = 16


600

Brodhi had 17 cupcakes at his birthday party. 5 cupcakes fell. Then his dad brought 6 more cupcakes. How many cupcakes does Brodhi have now?

BONUS CHALLENGE (+100 POINTS): Your team must write two equations showing what happened to Brodhi's cupcakes.

18 cupcakes

17 - 5 = 12

12 + 6 = 18