Mental Maths

Mabel skip-counted, starting at 50, until she got to 65. Could she be counting by fives?

• Yes

• No

Tags

CCSS.3.OA.D.9

Since he was hired, a chef has served 5,718 adults and 4,275 children. What is the total number of guests served?

• 9990

• 9991

• 9992

• 9993

• 9994

Tags

CCSS.4.OA.A.3

Aubrey sold boxes of cookies. She sold 9 boxes of cookies on Saturday. She sold 3 times as many boxes of cookies on Sunday as she sold on Saturday.

How many boxes of cookies did Aubrey sell on Sunday?

• 25

• 26

• 27

• 28

Tags

CCSS.4.OA.A.2

Tyler bought some toys for his new puppy to play with. The puppy played with the rope toy for 5 minutes. The puppy played with the frisbee for 5 times as long as he played with the rope toy.

How many minutes did the puppy play with the frisbee?

• 25

• 26

• 27

• 28

• 29

Tags

CCSS.4.OA.A.2

Patrick and Kevin play on the same basketball team. In their last game, Patrick scored 6 points. Kevin scored 2 times as many points as Patrick.

How many points did Kevin score?

• 10

• 11

• 12

• 13

• 14

Tags

CCSS.4.OA.A.2

Mr. Olsen's class went to the science museum to see dinosaur fossils. They saw a young brontosaurus that was 5 feet tall. They also saw an adult brontosaurus that was 15 feet tall.

How many times as tall as the young brontosaurus was the adult brontosaurus?

• 1

• 2

• 3

• 4

• 5

Tags

CCSS.4.OA.A.2

Ashley is helping her dad blow up green and blue balloons for their summer pool party. Ashley blew up 18 green balloons. She blew up 2 times as many green balloons as blue balloons.

How many blue balloons did Ashley blow up?

• 5

• 6

• 7

• 8

• 9

Tags

CCSS.4.OA.A.2

Mrs. Chavez sells clay pots at arts and crafts festivals. She charges $20 for her large clay pots. That is 4 times as much money as she charges for her small clay pots.

How much money does Mrs. Chavez charge for her small clay pots?

• 5

• 6

• 7

• 8

• 9

Tags

CCSS.4.OA.A.2

Carlos ran an experiment with bean plants. He gave one plant less light and one plant more light. The plant that got less light grew 2 inches. The plant that got more light grew 3 times as tall as the plant that got less light.

How many inches did the plant that got more light to grow?

• 5

• 6

• 7

• 8

Tags

CCSS.4.OA.A.2

Maria keeps jars filled with seashells and stones that she has collected. Her jar of seashells weighs 3 pounds. Her jar of stones weighs 9 pounds.

How many times as heavy as Maria's jar of seashells is her jar of stones?

• 1

• 2

• 3

• 4

Tags

CCSS.4.OA.A.2