Word Problems Multiplication as a Comparison

What is an unknown number?

• a number we know

• a number that is always correct

• a number that we donʻt know yet

• a number that is wrong

Tags

CCSS.3.OA.A.4

CCSS.3.OA.B.6

CCSS.3.OA.D.8

Can an unknown number be represented as a letter?

Ex: unknown number = p

• Yes

• No

• Not sure

Answer explanation

Example:

If Mr. Wada had 3 times as many fruits than Mr. Jarid. And Mr. Jarid had 4 fruits.

Eq: 4 x 3 = w or 3 x 4= w

w= number of fruits Mr. Wada has

Tags

CCSS.3.OA.A.4

CCSS.3.OA.D.8

Daeston has 9 dollars. Landon has 3 times as many dollars as Daeston. How many dollars does Landon have?

• 27 dollars

• 3 dollars

• 12 dollars

• 21 dollars

Tags

CCSS.3.OA.A.1

CCSS.3.OA.A.3

CCSS.3.OA.C.7

Daeston has 9 dollars. Landon has 3 times as many dollars as Daeston. Use the bar model to help solve this question.

Tags

CCSS.3.OA.A.1

CCSS.3.OA.A.3

CCSS.3.OA.A.4

CCSS.3.OA.B.5

CCSS.3.OA.C.7

Christian and Adeline read the same book. Christian reads 63 pages one weekend. He reads 7 times as many pages as Adeline. Which equation with an unknown to find the number of pages Adeline reads.

a= how much Adeline read

• 7 x 63= a

• 7/63 = a

• 7 x a = 63

• a/7=63

Tags

CCSS.3.OA.A.2

CCSS.3.OA.A.3

CCSS.3.OA.A.4

CCSS.3.OA.B.6

CCSS.3.OA.D.8

Christain and Adeline read the same book. Christain reads 63 pages one weekend. He reads 7 times as many pages as Adeline. What is the number of pages Adeline read.

Tags

CCSS.3.OA.A.2

CCSS.3.OA.A.3

CCSS.3.OA.A.4

CCSS.3.OA.B.6

CCSS.3.OA.C.7

Kingston swims 7 laps in a pool. Piʻikea swims 28 laps. How many times the number of laps Kingston swims does Piʻikea swim?

• 4

• 21

• 35

• 196

Tags

CCSS.3.OA.A.1

CCSS.3.OA.A.2

CCSS.3.OA.A.3

CCSS.3.OA.C.7

Emma learns 25 new spelling words. That is 5 times as many words as Max learns. How many words does Max learn? Draw a bar model to find the number of words Max learns. Show your work.

Tags

CCSS.3.OA.A.1

CCSS.3.OA.A.2

CCSS.3.OA.A.3

CCSS.3.OA.A.4

CCSS.3.OA.B.5

CCSS.3.OA.B.6

CCSS.3.OA.C.7

Jamila has 32 postcards. Kuʻulei has k postcards. Jamila has 4 times as many postcards as Kuʻulei. Select all the correct statements.

• Kuʻulei has 6 postcards.

• Kuʻulei has 8 postcards.

• The number of postcards Kuʻulei has can be found by solving the

  equation 32 = 4 x k.

• The number of postcards Henry has can be represented by the expression 32 x 4.

Tags

CCSS.3.OA.A.2

CCSS.3.OA.A.3

CCSS.3.OA.A.4

CCSS.3.OA.B.6

CCSS.3.OA.D.8

Jacob bikes 7 miles one week. Saydee bikes 28 miles the same week. How many times as many miles as Jacob bikes does Saydee bike?

Which equation can help you answer the question?

• 28-7 =

• 7 + 28 =

Tags

CCSS.3.OA.A.2

CCSS.3.OA.A.3

CCSS.3.OA.A.4

CCSS.3.OA.B.6

CCSS.3.OA.C.7