Unit 3 Lesson 14

Unit 3 Review

Multiplication

What does multiplication look like?

Multiple Choice

Which of the following area models represents 11 x 14 = 143?

Multiple Choice

Piper worked 15 hours a week during the summer. She worked a total of 6 weeks and earned $8 an hour. How much money did she make over the summer?

• $306

• $1,296

• $156

• $720

Multiple Select

Why do we estimate?

• To do mental math

• Because my teacher told me to

• Check for reasonableness

• Check my work

We estimate because...

• We check for reasonableness - Does my answer make sense?

• To do mental math

How do we estimate?

• We estimate by first, rounding the numbers

• Then, we do the math.

• Remember, one reason we estimate is so that we can do the math in our heads.

Multiple Choice

Jorge swam 188 minutes each week at summer camp. Which of the following is the best estimate of the number of minutes Jorge swam in 4 weeks?

• 800

• 700

• 900

• 500

Poll

Are you ready for the Unit test?

• Totally!

• NO!

• Kind of...