Bridges Unit 1 Review

Evaluate Expressions

100

7 x (10 x 4)

280

200

(3 x 8) x 4

96

300

(100 x 23) - (2 x 23)

2,254

400

(5 x 78) - (1 x 78)

312

500

3 x (2 x 3) + 2 x (3 x 3) + 3 x (3 x 2) 

54

Multiplication Strategies

100

Write and solve an equation that represents the statement.

To find 25 x 12, I double 25 and halve 12.

(25 x 2) x (12 / 2) = 300

OR

50 x 6 = 300

200

Write and solve an equation that represents the statement. 

To solve 13 x 16, I double and halve. 

(13 x 2) x (16 / 2) = 208

OR

26 x 8 = 208

300

Write and solve an equation that represents the statement. 

To find 10 times 34, I multiply 10 times 30 and add it to 10 times 4. 

(10 x 30) + (10 x 4) = 340

400

Write and solve an equation that represents the statement. 

To find 11 times 26, I multiply 10 time 26 and add it to 1 x 26.

(10 x 26) + (1 x 26) = 286

500

Write and solve an equation that represents the statement. 

To find 43 times 9, I multiply 43 times 10 and remove 1 group of 43.

(43 x 10) - (43 x 1) = 387

OR

(43 x 10) - 43 = 387

Fill in the Blank

100

16 x 14 = _____

224

200

____ x 7 = 16 x 14

32

300

____ x 5 = 13 x 10 = ____

26; 130 

400

35 x 99 = (____ x 35) - (1 x 35)

100

500

98 x 56 = (___ x 56) - (2 x 56) = ___

100; 5488