Evaluate the expression. 1/2 - 1/5 * 1/4 Write your answer as a fraction or as a whole or mixed number. ______

Calculate Total Tape Needed: Determine the total amount of electrical tape needed and the amount of tape on each roll. The electrician needs 8,000 centimeters of electrical tape, and each roll contains 2,000 centimeters of tape.Calculate Rolls Needed: Calculate the number of rolls needed by dividing the total amount of tape needed by the amount of tape on each roll. Number of rolls needed = Total amount of tape needed ÷ Amount of tape in each roll Number of rolls needed = 8,000 cm ÷ 2,000 cm Number of rolls needed = 4

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Math Problems

Grade 7

Evaluate numerical expressions involving fractions

Full solution

Q. Evaluate the expression.

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\frac{1}{2} - \frac{1}{5} \times \frac{1}{4}

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Write your answer as a fraction or as a whole or mixed number.

\newline

______

Calculate Total Tape Needed: Determine the total amount of electrical tape needed and the amount of tape on each roll. $\newline$ The electrician needs $8,000$ centimeters of electrical tape, and each roll contains $2,000$ centimeters of tape.
Calculate Rolls Needed: Calculate the number of rolls needed by dividing the total amount of tape needed by the amount of tape on each roll. $\newline$ Number of rolls needed $= \frac{\text{Total amount of tape needed}}{\text{Amount of tape in each roll}}$ $\newline$ Number of rolls needed $= \frac{8,000 \, \text{cm}}{2,000 \, \text{cm}}$ $\newline$ Number of rolls needed $= 4$