STAAR Grade 6: Math 2 — Questions and Answers
Question 1: What is the value of x in the equation 3x + 5 = 20?
- 3
- 5 (Correct answer)
- 7
- 15
Correct answer: 5
Subtract 5 from both sides to get 3x = 15, then divide both sides by 3 to get x = 5.
Question 2: A triangle has a base of 10 cm and a height of 6 cm. What is its area?
- 60 sq cm
- 30 sq cm (Correct answer)
- 16 sq cm
- 48 sq cm
Correct answer: 30 sq cm
Area of a triangle = ½ × base × height = ½ × 10 × 6 = 30 square centimeters.
Question 3: Which of the following is equivalent to 40%?
- 4/5
- 2/5 (Correct answer)
- 1/4
- 4/100
Correct answer: 2/5
40% = 40/100 = 2/5 when simplified by dividing both numerator and denominator by 20.
Question 4: On a number line, which point represents -3?
- A point 3 units to the right of zero
- A point 3 units to the left of zero (Correct answer)
- A point at zero
- A point between 0 and 1
Correct answer: A point 3 units to the left of zero
Negative numbers are located to the left of zero on a number line; -3 is 3 units to the left of zero.
Question 5: A recipe calls for 2/3 cup of sugar. If you want to make 3 batches, how much sugar do you need?
- 1 cup
- 1 1/3 cups
- 2 cups (Correct answer)
- 2 1/3 cups
Correct answer: 2 cups
2/3 × 3 = 6/3 = 2 cups of sugar.
Question 6: What is the mean (average) of the data set: 8, 12, 6, 14, 10?
- 8
- 10 (Correct answer)
- 12
- 14
Correct answer: 10
Mean = (8 + 12 + 6 + 14 + 10) ÷ 5 = 50 ÷ 5 = 10.
STAAR Grade 6: Math 2
What is the value of x in the equation 3x + 5 = 20?