Math Lessons 3.5-3.7 Checkup

Which equation is represented by this model?

• 9 x 10 = 90

• 8 x 5 = 40

• 3 x 9 = 27

• 7 x 5 = 35

If Cameron wants to represent 4 x 8 in an array, how many counters or manipulatives will he need?

• 12

• 48

• 32

• 50

Which expression is equivalent to 3 x (4 + 6)

• (3 + 4) + (4 + 6)

• (3 x 6) x (3 x 3)

• 3 x 4 x 6

• (3 x 4) + (3 x 6)

Which makes the number sentence true?

7 x 9 = ?

• 63

• 66

• 79

• 60

Which number in the blank would make this equation true?

8 x 5 = ___

• 40

• 31

• 30

• 25

Analyze this equation.

3 x (4+8) = (3 x 4) + (3 x 8)

Which property of multiplication does this equation demonstrate?

• commutative

• distributive

• identity

• associative

What is the value of (3 x 2) + (4 x 2) and why?

• 11 because (3x2) + (4x2) = 5 + 6

• 11 because (3x2) + (4x2) = 6 + 8

• 14 because (3x2) + (4x2) = 6 x 8

• 14 because (3x2) + (4x2) = 6 + 8

Amira earns $8 per hour to walk dogs. How much money did she earn this week if she walked dogs for 4 hours in all?

• $32

• $78

• $15

• $12