Mathematics IV

Which is a number sentence?

• 54

• 2 - 1

• 11 - 6 = 5

• 234

Which number sentence shows a sum?

• 5 - 5 = 0

• 5 + 15 = 20

• 5 - 0 = 5

• 15 - 5 = 10

Which number sentence shows a difference?

• 7 + 5 = 12

• 7 - 6

• 756

• 7 - 5 = 2

Is this an example of an addition number sentence?

12 + 8 = 20

• Yes

• No

Is this an example of a subtraction number sentence?

18 - 9

• Yes

• No

Some frogs sat on a log. Six jumped in the water. Five frogs were left. How many frogs were on the log in the beginning?

• 12

• 13

• 15

• 11

I saw 6 zebras, 5 hippos, and 4 tigers at the zoo. How many animals did I see at the zoo?

• 12

• 7

• 15

• 9

Sally has 13 cookies. She gave her brother 4. She also ate 4.

How many cookies does she have left?

• 5

• 6

• 7

• 8

There are 7 blue shirts in the washing machine. There are some red shirts in there too. There are 16 shirts in the machine?

How many shirts are red?

Choose the equations with the unknown number AND the solved equation.

• 16 + ? = 7

  16 + 7 = 7

• 7 + 16 = ?

  7 + 16 = 23

• 7 + ? = 16

  7 + 16 = 7

• 7 + ? = 16

  7 + 9 = 16

How much is 13 + 6?

• 20

• 19

• 18

• 17