Mental Math Lesson Quiz

Which response shows the commutative property for the following?
4c * 8b = ?
1. 32bc
2. 8c * 4b
3. 4c * 8b
4. 8b * 4c
Identify the property that is demonstrated below.
(7a * 8b) * 12c = 7a * (8b * 12c)
1. Identity
2. Associative
3. Commutative
4. Distributive
Which of the following shows the correct use of the distributive property for the following number statement?
9b - 12b = ?
1. (9 - 12)b
2. -3b
3. 12b - 9b
4. b(9 + 12)
Identify the property that is demonstrated below.
72b = 72
1. Identity
2. Associative
3. Distributive
4. Commutative
Which response shows the commutative property for the following?
7a * 9b = ?
1. 9a * 4b
2. 9b * 7a
3. 63ab
Which response show the associative property for the following?
7 * (3 * b) = ?
1. 21b
2. 7 * (b * 3)
3. 3 * (7 * b)
4. (7 * 3) * b
Identify the property that is demonstrated below.
6(a - b) = (6 * a) - (6 * b)
1. Distributive
2. Identity
3. Associative
4. Commutative
Take a look at the solution steps for the following problem.
Step 1 = 6b + 5 + 9b + 6
Step 2 = 6b + 9b + 5 + 6

Step 3 = (6b + 9b) + (5 + 6)

Step 4 = (6 + 9)b + (5 + 6)

Step 5 = 14b + 11

What property is used in step 5?
1. Associative
2. Commutative
3. Arithmatic Fact
4. Distributive
Take a look at the solution steps for the following problem.
Step 1 = 6b + 5 + 9b + 6
Step 2 = 6b + 9b + 5 + 6

Step 3 = (6b + 9b) + (5 + 6)

Step 4 = (6 + 9)b + (5 + 6)

Step 5 = 14b + 11

What property is used in step 2?
1. Commutative
2. Distributive
3. Associative
4. Arithmatic Fact
Take a look at the solution steps for the following problem.
Step 1 = 6b + 5 + 9b + 6
Step 2 = 6b + 9b + 5 + 6

Step 3 = (6b + 9b) + (5 + 6)

Step 4 = (6 + 9)b + (5 + 6)

Step 5 = 14b + 11

What property is used in step 4?
1. Arithmatic Fact
2. Associative
3. Distributive
4. Commutative
Identify the property that is demonstrated below?
- 5a * (7b * 5c) = (-5a * 7b) * 5c
1. Identity
2. Commutative
3. Distributive
4. Associative
Which of the following shows the correct use of the distributive property for the following number statement?
5(a - b + c) = ?
1. (a - b + c)5
2. 5a + 5c - 5b
3. 5( c + a - b)
4. 5a - 5b + 5c
Identify the property that is demonstrated below.
(a - b)7 = (a * 7) - (b * 7)
1. Commutative
2. Identity
3. Associative
4. Distributive
Identify the property that is demonstrated below.
-7a * (6b * 3c) = -7a * (3c * 6b)
1. Commutative
2. Distributive
3. Associative
4. Identity
Identify the property that is demonstrated below.
77b = 77
1. Commutative
2. Associative
3. Distributive
4. Identity
Identify the property that is demonstrated below.
4a(7b * 6c) = 4a(6c * 7a)
1. Distributive
2. Commutative
3. Identity
4. Associative
Which response shows the associative property for the following?
2 * (5 * b) = ?
1. 5 * (2 * b)
2. 2 * (b * 5)
3. (2 * 5) * b
4. 10b
Compensation works because you keep the expression ________.
1. Balanced
2. In your head.
Which of the following is a correct use of compensation for 43 + 27 =
1. 46 + 30 =
2. 40 + 30 =
Which of the following is a correct use of compensation for 28 + 19 =
1. 29 + 20 =
2. 27 + 20
Which of the following is a correct use of compensation for 141 + 38 =
1. 143 + 40
2. 139 + 40
Which of the following is a correct use of compensation for 71 - 16 =
1. 75 - 20
2. 67 - 20
Which of the following is a correct use of compensation for 32 - 18 =
1. 30 - 20
2. 34 - 20
Which of the following is a correct use of compensation for 26 - 15 =
1. 21 - 21
2. 31 - 20
Which of the following is a correct use of compatible numbers for 12 + 7 + 8 + 13 =
1. 19 + 21
2. 12 + 13 + 8 + 7
3. 40
4. 12 + 8 + 13 + 7
Which of the following is a correct use of compatible numbers for 29 + 28 + 21 + 42 =
1. 42 + 29 + 28 + 21
2. 30 + 20 + 30 + 40
3. 120
4. 29 + 21 + 28 + 42
Which of the following is a correct use of compatible numbers for 6 * 24 * 5 =
1. 12 * 12 * 5
2. 144 * 5
3. 6 * 5 * 24
4. 720
Which of the following is a correct use of compatible numbers for 8 * 22 * 10 =
1. 220 * 8
2. 1760
3. 80 * 20 + 80 * 2
4. 8 * 10 * 22