Exploring Math Equality: Solve for the Unknowns

If 5 + x = 12, what is the value of x?

• 3

• 10

• 7

• 5

Samantha has 3 apples, and she buys y more apples. If she has 10 apples now, what is the value of y?

• 10

• 5

• 2

• 7

A box contains 8 chocolates. If you eat z chocolates, and there are 5 left, how many chocolates did you eat?

• 4

• 6

• 2

• 3

Tom has twice as many marbles as Jerry. If Jerry has 6 marbles, how many marbles does Tom have?

• 10

• 8

• 14

• 12

If 4 times a number n equals 20, what is the value of n?

• 2

• 15

• 10

• 5

A rectangle has a length of 10 cm and a width of w cm. If the perimeter is 40 cm, what is the value of w?

• 5 cm

• 20 cm

• 15 cm

• 10 cm

If 15 - m = 9, what is the value of m?

• 5

• 6

• 7

• 10

Lily has 20 stickers. She gives away s stickers to her friends. If she has 12 stickers left, how many stickers did she give away?

• 10

• 8

• 5

• 15

If 3 times a number p equals 21, what is the value of p?

• 5

• 10

• 3

• 7

A farmer has 50 apples. He sells a number of apples, a, and now has 30 apples left. How many apples did he sell?

• 25

• 20

• 15

• 10