Unit 4 Review

2x2 Digit SA

100

15 x 32 = ?

480

200

22 x 43 = ?

946

300

42 x 75 = ?

3,150

400

63 x 91 = ?

5,733

500

67 x 23 = ?

1,541

3x2 Digit SA

100

435 x 72 = ?

31,320

200

325 x 54 = ?

17,550

300

804 x 79 = ?

63,516

400

284 x 81 = ?

23,004

500

183 x 38 = ?

6,954

Fractions of Wholes

100

1/4 of 64 = 

so

25 x 64 =

1/4 of 64 = 16

so

25 x 64 = 1600

200

3/4 of 48 = 

so 

75 x 48 =

3/4 of 48 = 36

so 

75 x 48 = 3600

300

1/4 of 36 = 

so 

25 x 36 =

1/4 of 36 = 9

so 

25 x 36 = 900

400

3/4 of 84 = 

so

75 x 84 =

3/4 of 84 = 21

so

75 x 84 = 2100

500

3/4 of 24 = 

so

76 x 24 =

3/4 of 24 = 18

so

76 x 24 =1824

(because 75 x 24 = 1800)

True or False?

100

True or False: 

32 x 4 = 1280 ÷ 10

Hint: just use quick math to solve each problem

True

200

True or False:

58 x 99 = 4,897

Hint: what is 58 x 100?

False

5,800 - 58 = 5,742

300

True or False: 

480 x 25 = 12,000

Hint: use doubling and halving!

True

400

True or False:

342 x 28 = 3828 ÷ 3

Hint: use estimation skills and reasoning

False

342 x 28 = answer is greater than 6,000 (300 x 20)

3828 ÷ 3 = answer is around 1,000 (3,000 ÷ 3)

500

True or false: 

301 x 35 = 7,492 ÷ 4

Hint: use estimation and reasoning skills

False

301 x 35 = more than 9,000 (300 x 30)

7,492 ÷ 4 = less than 2,000 (8,000 ÷ 4)

Teacher Trivia

100

What is Mrs. Bradish's son's name?

Alex

200

How old is Ms. Martin?

27

300

How many kids does Mrs. Galford have?

Double your money: How many are boys/girls?

2 boys

400

What state is Mrs. Bradish from? What state is Ms. Martin from?

Bradish - New Hampshire

Martin - Maryland

500

In what year did Ms. Martin start teaching at Brick Mill?

2019