SBA Flashcards: Math CAT

Front

What is the value of the digit 7 in 47,215?

Back

Identify the place of the digit (7 is in the thousands place). Multiply the digit by its place value (7 × 1,000 = 7,000).

Front

How do you round 4,362 to the nearest hundred?

Back

Look at the tens digit (6). If it's 5 or more, round up; if less, round down. 4,362 becomes 4,400.

Front

Multiply 234 × 6.

Back

Multiply 6 × 4 = 24 → write 4, carry 2. Multiply 6 × 3 = 18 + 2 = 20 → write 0, carry 2. Multiply 6 × 2 = 12 + 2 = 14 → final answer: 1,404.

Front

Estimate 487 + 639.

Back

Round 487 to 500. Round 639 to 600. Add: 500 + 600 = 1,100 (estimated sum).

Front

Is 17 prime or composite?

Back

A prime number has only 2 factors: 1 and itself. 17 can only be divided by 1 and 17 → Prime.

Front

Find the GCF of 12 and 18.

Back

List factors: 12 → 1, 2, 3, 4, 6, 12; 18 → 1, 2, 3, 6, 9, 18. Common factors: 1, 2, 3, 6. GCF = 6.

Front

Find an equivalent to 3/4.

Back

Multiply top and bottom by the same number (e.g., ×2). 3 × 2 = 6, 4 × 2 = 8 → 6/8 is equivalent.

Front

What is 2/5 + 1/5?

Back

Same denominators: keep denominator. Add numerators: 2 + 1 = 3. Answer = 3/5.

Front

Convert 3½ to an improper fraction.

Back

Multiply whole number by denominator: 3 × 2 = 6. Add numerator: 6 + 1 = 7. Answer = 7/2.

Front

Which is greater: 0.45 or 0.5?

Back

Line up the decimals: 0.45 and 0.50. Compare digit by digit → 5 > 4 → 0.5 is greater.