#Pra KBM - Addition and Multiplication I#

Calculate 356 + (40 + 4).

Solution:

(1) 356 + (4+40)

(2) (356+4) + 40

(3) 360 + 40 = 400

Based on number (1), the ​ (a)   property of addition is applied.

• commutative
• distributive
• no one correct
• parentheses

Calculate 356 + (40 + 4).

Solution:

(1) 356 + (4+40)

(2) (356+4) + 40

(3) 360 + 40 = 400

Based on number (2), the ​ ​ (a)   property of addition is applied.

• distributive
• associative
• commutative
• all incorret

Compute 2009 + 2001 + 2009 + 2001 + 2009 + 2001.

Solution:

(a)   x 3 = ​ twelve thousand thirty.

• 4010
• 3000
• 3010
• 5000

Evaluate (2 + 6 + 10 + ... + 30).

Solution:

32 x​ (a)   = One hundred twenty eight.

• 4
• 3
• 5
• 10

Find the sum of the first twenty one nonnegative integers.

Solution: 0 + 1 + 2 + 3 + ... + 20

​ (a)   x 10 = Two hundred ten.​

• 21
• 20
• 19
• 18

Given the following statement: 8 x 114 x 125 = 114 x 8 x 125. The statement uses ​ (a)   property of multiplication.

• commutative
• associative
• distributive
• commutative and associative

Given the following statement: (30 x 114) x 5 = 30 x (114 x 5). The statement uses ​ ​ (a)   ​ property of multiplication.

• distributive
• commutative and associative
• associative
• commutative

Ariq owns a very orderly pear tree. The tree has 12 branches, and each main branch has exactly 5 smaller branches. Each small branch has ​ (a)   pears, and there are 10 leaves surrounding each pear. How many leaves are on this pear tree?

Solution: 60 x 30 = 1800 leaves.

• 3
• 5
• 6
• 10

Assuming a =​ (a)   , b = 25, c = 4, what is the value of (a+b) x c?

Solution: 400.

• 75
• 4
• 10
• 25

The area of a rectangle with side lengths 255 units and ​ (a)   units is 51000 square units.

• 200
• 20
• 100
• 2000