Numerical Expressions and Equations

(AR.2.1) Which numerical expression represents the description? Add 3 1/2 and 5. Then subtract the sum from 20.

• 3 1/2 + 5 - 20

• (3 1/2 + 5) - 20

• 20 - 3 1/2 + 5

• 20 - (3 1/2 + 5)

(AR.2.1) Which correctly describes the expression 15 - (3 × 4)?

• A. Subtract 3 from 15, then multiply by 4.

• B. Find the product of 3 and 4, then subtract 15.

• C. Multiply 3 and 4, then subtract the product from 15.

• D. Multiply 15 and 4, then subtract 3.

(AR.2.2) Which is the solution? 6 + 8 ÷ 2 = □

• 7

• 10

• 11

• 12

(AR.2.2) An equation is shown. What is the value of the equation? 12 ÷ (2.3 + 1.7) × 7 = □

(AR.2.3) Which best explains the equation below? (11 + 16) × 9 = 8 × 2 × 9 + 11

• The equation is true because both sides of the equation are equal to 243.

• The equation is true because both sides of the equation are equal to 155.

• The equation is false because both sides of the equation are equal to 243.

• This equation is false because both sides of the equation are unequal.

Kerri has 125 total beads. She has the same number of beads in 7 different colors. She also has 76 clear beads. Which of these equations can be solved to determine the unknown number of each color of bead? Choose all that apply.

• (125 - 76) ÷ 7 = b

• 76 = 125 - (b × 7)

• (125 + 76) ÷ 7 = b

• (125 - 76) = b + 7

• 125 = (b × 7) + 76

There is an equal number of flamingos at four ponds and 1 less at a fifth pond. There are 69 flamingos. How many flamingos are at each of the four ponds? Which equation can represent this situation?

• (69 × 1) ÷ 5 = f

• (69 ÷ 5) - 1 = f

• (5 × f) = 69

• (5 × f) - 1 = 69

Which algebraic expression can be used to describe the rule for the numerical pattern and variable? Pattern: 10, 18, 26, 34, ... n = 2, 4, 6, 8, ...

• 4n + 2

• 4n - 2

• 4n + 4

• n + 8

Which algebraic expression can be used to describe the rule for the numerical pattern and variable?

• 5x

• 5x – 1

• 6x + 1

• 5x + 1

Use your answer from Part A to determine the value of the 16th term.