CAASPP Number Sense 5 — Questions and Answers
Question 1: A bag has 5 red and 3 blue marbles. What fraction of the marbles are red?
- 5/8 (Correct answer)
- 5/3
- 3/8
- 5/13
Correct answer: 5/8
There are 5 red marbles out of 5 + 3 = 8 total, so the fraction is 5/8.
Question 2: Which number has a 4 in the thousandths place? 3.2045
- 3.2045 (Correct answer)
- 3.0425
- 3.4025
- 3.2450
Correct answer: 3.2045
In 3.2045, the digits after the decimal are 2 (tenths), 0 (hundredths), 4 (thousandths), 5 (ten-thousandths).
Question 3: What is 2/5 ÷ 4/5?
- 1/2 (Correct answer)
- 8/25
- 2/4
- 5/2
Correct answer: 1/2
Dividing fractions: 2/5 × 5/4 = 10/20 = 1/2.
Question 4: Which number sentence shows the commutative property of multiplication?
- 6 × 4 = 4 × 6 (Correct answer)
- 6 × (4 × 2) = (6 × 4) × 2
- 6 × 1 = 6
- 6 × 0 = 0
Correct answer: 6 × 4 = 4 × 6
The commutative property states that changing the order of factors does not change the product: a × b = b × a.
Question 5: Estimate 398 × 51 by rounding each number to the nearest hundred and ten.
- 20,000 (Correct answer)
- 25,000
- 15,000
- 40,000
Correct answer: 20,000
Rounding: 398 ≈ 400 and 51 ≈ 50; 400 × 50 = 20,000.
Question 6: Which set of numbers is ordered correctly from greatest to least: {−5, 2, −1, 0}?
- 2, 0, −1, −5 (Correct answer)
- −5, −1, 0, 2
- 0, −1, 2, −5
- 2, −1, 0, −5
Correct answer: 2, 0, −1, −5
On the number line, 2 > 0 > −1 > −5, so greatest to least is 2, 0, −1, −5.
Question 7: A 6-foot rope is cut into pieces that are each 2/3 foot long. How many pieces are there?
- 9 (Correct answer)
- 4
- 6
- 12
Correct answer: 9
6 ÷ (2/3) = 6 × (3/2) = 18/2 = 9 pieces.
CAASPP Number Sense 5
A bag has 5 red and 3 blue marbles.
What fraction of the marbles are red?