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Math Computations Flashcards

9 cards from real TABE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. 234 x 4 = ?

    Answer: 936

    To multiply 234 by 4, perform standard multiplication. Multiply 4 by 4 (16, write 6 carry 1), then 4 by 3 (12, add carry 1 to get 13, write 3 carry 1), and finally 4 by 2 (8, add carry 1 to get 9). Combining these results in 936.

  2. 20.159 + 0.52 = ?

    Answer: 20.679

    To add decimals, align the decimal points and add each column from right to left. Adding 20.159 and 0.52 (which can be written as 0.520 for alignment) results in 20.679. Ensure the decimal point is correctly placed in the sum.

  3. 7/10 + 4/10 = ?

    Answer: 1 1/10

    When adding fractions with the same denominator, simply add the numerators and keep the denominator. So, 7/10 + 4/10 = (7+4)/10 = 11/10. To express this as a mixed number, divide 11 by 10, which gives 1 with a remainder of 1, resulting in 1 1/10.

  4. 15% of 40 = ?

    Answer: 6

    To calculate 15% of 40, convert the percentage to a decimal by dividing by 100, which is 0.15. Then, multiply this decimal by 40. So, 0.15 * 40 = 6.

  5. Solve for y. -2y = 8

    Answer: -4

    To solve for y in the equation -2y = 8, you need to isolate y. Divide both sides of the equation by -2. This gives y = 8 / -2, which simplifies to y = -4.

  6. 1.535 ÷ 5 = ?

    Answer: 0.307

    To divide 1.535 by 5, perform long division. Divide 1 by 5 (0), then 15 by 5 (3), then 3 by 5 (0), and finally 35 by 5 (7). Place the decimal point in the quotient directly above the decimal point in the dividend, resulting in 0.307.

  7. 25% off a shirt with a $500 price tag. The shirt is further discounted by 15% after a month. Which of the subsequent expressions can be used to calculate the shirt's selling price?

    Answer: (500)(0.75)(0.85)

    The initial price is $500. A 25% discount means the shirt is sold at 100% - 25% = 75% of its original price, represented as (500)(0.75). A further 15% discount after a month applies to this new discounted price, meaning it's sold at 100% - 15% = 85% of that price. Therefore, the final selling price is calculated by (500)(0.75)(0.85).

  8. Which of the following points is on the equation 3x+5y=7 line?

    Answer: (−1,2)

    To determine which point lies on the line 3x + 5y = 7, substitute the x and y coordinates from each option into the equation. For option D, (-1, 2), substituting gives 3(-1) + 5(2) = -3 + 10 = 7. Since this equals 7, the point (-1, 2) is on the line.

  9. 8% of ___ =64

    Answer: 800

    To solve '8% of ___ = 64', let the unknown number be x. This translates to the equation 0.08 * x = 64. To find x, divide 64 by 0.08. Performing this division (64 / 0.08) yields 800.