Multiplication word problems

Mark bought three packs of cards. Each pack contained ten trading cards. Which of the following is NOT a way to solve this problem?

• He bought 30 cards because 3 groups of 10 is 30.

• He bought 30 cards because 10 + 10 + 10 = 30.

• He bought 30 cards because each pack costs $10.

Tags

CCSS.3.OA.A.3

Marcia wants to show her math work for the array that she just created. She has laid out 4 rows of coins with 5 coins in each row. Which of the following is way that she could show her work?

• She could write 4 + 4 + 4 + 4 = 16

• On a number line she could show skip counting by 5s. She would start at 0, jump to 5, jump to 10, jump to 15, and jump to 20 to show counting by 5s four times.

• She could write 4 x 5 = 15

• On a number line she could show this by starting at 4 and jumping 5 more. The answer would be 9.

Tags

CCSS.2.OA.C.4

Jacob lined up his cookies in an array to count them quicker. He made three rows with 2 cookies in each row. How many cookies did Jacob have to eat?

• He had 5 cookies because 2 + 3 = 5

• He had 6 cookies because 2 + 2 + 2 = 6.

• He had 6 cookies because 3 + 3 = 6.

• He had 1 cookie because three minus two is one.

Tags

CCSS.2.OA.C.4

Howard planted a garden of tomato plants. He planted 15 plants. Which of the following arrays shows what Howard's garden might look like?

• O O

  O O

  O O

  O O

  O O

  O O

  O O

  O

• O O O O

  O O O O

  O O O O

  O O O O

• O O O O O O O O O O O O O O O

• O O O O O

  O O O O O

  O O O O O

Tags

CCSS.2.OA.C.4

Maggie drew the following array.

O O O O

O O O O

O O O O

Which of the following mathematical equations could Maggie use to show her work?

• 10 + 2 = 12

• 4 + 4 + 4 = 12

• 3 + 3 + 3 + 3 + 3 = 12

• 6 + 6 = 12

Tags

CCSS.2.OA.C.4