Multiplicative Comparison Equations

Multiplicative comparison word problems

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How can we solve these problems?

1. Read the problems carefully.
2. Highlight Key information.
3. Create Bar Models
4. Use Multiplication charts/Manipulatives
5. Decide if you are going to multiply or Divide.

Multiple Choice

Which equation matches this multiplicative sentence?

27 is 3 times as much as 9

• 3 * 9 = 27

• 9 * 27 = 3

• 3 * 27 = 9

• 9 = 27 * 3

Multiple Choice

Marsh eats "M" slices of pizza. Jody ate 3 times more than Marsha. Which expression shows how much Jody ate?

• M + 3

• M - 3

• M × 3

• M ÷ 3

Remember to use these steps when solving Problems.

1. Make your labels.
2. Find out which label is "more" and write "more" beside it.
3. Write how many times more beside it (multiplier)
4. Draw your bar model and fill in the information.
5. Decide if you are multiplying or dividing to get your answer. Then write your equation to Solve.

Let's practice with this problem

Sarah’s bag costs $21. Her pencil costs $3. Sarah’s bag costs how many times as much as her pencil?

Labels: B= 21 ( 7 times more)

P = 3

Put bar model

Equation: 21 ÷ 3 = 7

Multiple Choice

Megan has 28 letters to mail. This is 4 times as many letters as Ricky has to mail. How many letters does Ricky need to mail?

• 5

• 7

• 24

• 112

Multiple Choice

Paul ate 12 slices of pizza. Chris ate 2 slices fewer than Paul. Barbara ate twice as much as Chris. How many slices did Barbara eat?

• 24

• 20

• 18

• 6