Vocabulary
Q: Which number is a rational number?
Choices: A) –3 B) π C) √2 D) 0.7̅
A: –3 is rational because it can be written as –3/1.
Q: –4 + (–6) = ?
Choices: A) –10 B) –2 C) 2 D) 10
A: Adding two negatives gives a more negative result.
Q: 1/2 + 1/4 = ?
Choices: A) 1/2 B) 3/4 C) 1 D) 1 1/4
B: Find common denominator: 2/4 + 1/4 = 3/4.
Q: An elevator goes down 12 floors in 3 minutes. How many per minute?
Choices: A) –2 B) –3 C) –4 D) –6
C: 12 ÷ 3 = 4, negative because it’s down.
Q: What do you call two numbers that add to zero?
Choices: A) Opposites B) Additive Inverses C) Unit Rates D) Quotients
B: Additive inverses are numbers that cancel out because their sum is 0.
Q: 7 – (–2) = ?
Choices: A) 5 B) –5 C) 9 D) –9
C: 7 – (–2) is the same as 7 + 2.
Q: 2/3 × 3/4 = ?
Choices: A) 1/4 B) 1/2 C) 3/4 D) 6/7
B: Multiply across: 2×3=6, 3×4=12 → 6/12 = 1/2.
Q: 4 friends share $20 equally. How much each?
Choices: A) $2 B) $4 C) $5 D) $6
C: 20 ÷ 4 = 5.
Q: Which of the following are rational numbers?
Choices: A) 1/2 B) π C) √2 D) –2.5
A and D: 1/2 and –2.5 can both be written as fractions.
Q: –8 – (–3) = ?
Choices: A) –11 B) –5 C) –3 D) 5
B: Subtracting a negative is the same as adding the opposite.
Q: 4/7 ÷ 2/3 = ?
Choices: A) 6/7 B) 2/21 C) 14/6 D) 7/12
A: Keep, Change, Flip: 4/7 × 3/2 = 12/14 = 6/7.
Q: Bank account starts with $100, loses $10/month. Balance after 2 months?
Choices: A) $80 B) $90 C) $70 D) $60
A: 100 – (10×2) = 80.
Q: Which decimal is repeating?
Choices: A) 0.25 B) 0.5 C) 0.3̅ D) 0.75
C: 0.3̅ repeats forever.
Q: –8 × –7 = ?
Choices: A) –56 B) 56 C) –15 D) 15
B: Negative × Negative = Positive.
Q: Write 3/4 as a decimal.
Choices: A) 0.25 B) 0.5 C) 0.6 D) 0.75
D: 3 ÷ 4 = 0.75.
Q: A diver goes down 15 ft in 5 minutes. Rate?
Choices: A) –2 B) –3 C) –4 D) –5
B: - 15 ÷ 5 = -3, and it’s negative because it’s down.
Q: Which is always true about rational numbers?
Choices: A) They can be written as a fraction B) They are whole numbers C) They never repeat D) They are positive
A: Rational numbers can always be written as fractions.
Q: Which is the additive inverse of –12?
Choices: A) 0 B) 12 C) –12 D) 24
B: The additive inverse is the number that brings the sum to zero.
Q: Convert 5/6 to a decimal.
Choices: A) 0.6 B) 0.75 C) 0.833… D) 0.5
C: 5 ÷ 6 = 0.833… repeating.
Q: 8 miles with water stops every 1 mile. How many stations?
Choices: A) 6 B) 7 C) 8 D) 9
C: 8 ÷ 1 = 8.