PAPA PAPA Number Sense & Operations 1 — Questions and Answers
Question 1: What is the value of 3/4 + 5/6?
- 8/10
- 19/12 (Correct answer)
- 8/12
- 15/24
Correct answer: 19/12
Finding a common denominator of 12 gives 9/12 + 10/12 = 19/12.
Question 2: Which of the following is equivalent to 0.375?
- 3/4
- 3/8 (Correct answer)
- 1/3
- 5/8
Correct answer: 3/8
0.375 = 375/1000, which simplifies to 3/8.
Question 3: A jacket costs $80 and is on sale for 25% off. What is the sale price?
- $20
- $55
- $60 (Correct answer)
- $65
Correct answer: $60
25% of $80 is $20, so the sale price is $80 − $20 = $60.
Question 4: What is the least common multiple (LCM) of 8 and 12?
- 4
- 24 (Correct answer)
- 48
- 96
Correct answer: 24
The multiples of 8 are 8, 16, 24… and of 12 are 12, 24…, so the LCM is 24.
Question 5: Which number is between 2/5 and 3/4?
- 1/5
- 1/2 (Correct answer)
- 4/5
- 7/8
Correct answer: 1/2
2/5 = 0.40 and 3/4 = 0.75; 1/2 = 0.50, which falls between them.
Question 6: A recipe calls for 2 1/2 cups of flour. If you want to make 3 times the recipe, how many cups of flour do you need?
- 5 cups
- 6 cups
- 7 1/2 cups (Correct answer)
- 8 cups
Correct answer: 7 1/2 cups
2 1/2 × 3 = 5/2 × 3 = 15/2 = 7 1/2 cups.
Question 7: What is the greatest common factor (GCF) of 36 and 48?
- 6
- 9
- 12 (Correct answer)
- 18
Correct answer: 12
The factors of 36 include 1, 2, 3, 4, 6, 9, 12, 18, 36; factors of 48 include 12; the greatest common factor is 12.
PAPA PAPA Number Sense & Operations 1
What is the value of 3/4 + 5/6?