NBT Mathematics: Number Sense and Calculations Flashcards
7 cards from real NBT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 NBT Mathematics: Number Sense and Calculations flashcards as text
What is the value of 3/4 + 2/3?
Answer: 17/12
Using a common denominator of 12: 9/12 + 8/12 = 17/12.
Which fraction is equivalent to the decimal 0.375?
Answer: 3/8
0.375 = 375/1000, which simplifies to 3/8 by dividing numerator and denominator by 125.
What is 2.5% of 840?
Answer: 21
2.5% = 0.025, and 0.025 × 840 = 21.
What is (1/2) ÷ (3/4)?
Answer: 2/3
Dividing by 3/4 means multiplying by its reciprocal 4/3: (1/2) × (4/3) = 4/6 = 2/3.
What is the value of |−9| + |4| − |−2|?
Answer: 11
The absolute values are 9, 4, and 2, so the expression equals 9 + 4 − 2 = 11.
A shirt originally costs $80 and is discounted by 15%. What is the sale price?
Answer: $68.00
A 15% discount means paying 85% of $80: 80 × 0.85 = $68.00.
Which of the following fractions lies between 1/3 and 1/2 on the number line?
Answer: 2/5
Converting to decimals: 1/3 ≈ 0.333, 1/2 = 0.500, and 2/5 = 0.400 falls between them.