Chapter 2: Multiply Whole Numbers

Prime Factorization

100

Prime factorization of 12?

2 x 2 x 3

200

Prime factorization of 15? 

3 x 5

300

Prime factorization of 27?

3 x 3 x 3 or 3³

400

Random Trivia!!!! What type of costume were the 5th grade teachers wearing at our distribution date? 

Flamingos! 

500

Prime factorization of 81?

3 x 3 x 3 x 3 or 3⁴

Estimating Products

100

What is the best estimate of 9 x 11? 

10 x 10 = 100

200

Random Trivia!!! What is the name of Ms. Muñoz's dramatic furry friend? 

Sushi!

300

Estimate 69 x 7. 

70 x 7 = 490

400

Estimate 61 x 68. 

60 x 70 = 4,200

500

Estimate 106 x 52. 

100 x 50 = 5,000

Powers & Exponents

100

Write the power using repeated multiplication. 5⁶

5 x 5 x 5 x 5 x 5 x 5

200

Write the product using an exponent. 

2 x 2 x 2 x 2 x 2 x 2 x 2

2⁷

300

Random Trivia!! When is our Math Chapter 2 Test? 

Thursday!

400

What is the value of 3⁴?

81

500

What is the value of 10⁴ x 5

50,000

Multiply by 1-Digit

100

What is 14 x 5?

70

200

What is 142 x 4?

568

300

What is 342 x 7?

2,394

400

What is 485 x 9? 

4,365

500

Random Trivia!!! What time should all assignment be turned in by? 

2:30 pm (4:00 pm the latest!)

Multiply by 2-Digit

100

What is 22 x 13?

 286

200

What is 83 x 45?

3,735

300

What is 68 x 74? 

5,032

400

What is 492 x 14? 

6,888

500

What is 638 x 23? 

14,674