Single choice
9/20 =
Reveal answer details Close answer details
Correct answerB
Explanation
Explanation: Multiply both 9 and 20 by 5.
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Single choice
George buys 6 T-shirts for $5 each and 4 pairs of jeans for $8.50 each. He uses the following expression to calculate the total amount of money spent: 6 (5) + 4 (8.5). Which of the following expressions could George also have used? Reveal answer details Close answer detailsCorrect answerB Explanation Explanation: George bought four items at both $5 and $8.5, but he also bought two more items at $5.
Single choice
8.26 x 76.8 = Reveal answer details Close answer detailsCorrect answerC Explanation Explanation: Remember that since the terms of the problem have three units to the right of the decimal point, the answer will as well.
Single choice
On a real number line, x = -4 and y = 7. What is the length of the line XY? Reveal answer details Close answer detailsCorrect answerA Explanation Explanation: Measure the length of the line by adding the respective distances of each value from zero.
Single choice
If Todd can type 60 words a minute, how long will it take him to type a 15,000 word document? Reveal answer details Close answer detailsCorrect answerC Explanation Explanation: Divide the length of the document by the number of words per minute to find the number of minutes it will take. The number of minutes can then be divided by the number of minutes in an hour. 250 minutes is equivalent to 4 hours and 10 minutes.
Single choice
Written in scientific notation, the number 173,000,000,000 is: Reveal answer details Close answer detailsCorrect answerC Explanation Explanation: Place a decimal point at the end of the number and then move it eleven places to the left, until it creates a number between one and ten.
Single choice
Which of the following units would be most appropriate for measuring the length of a pen? Reveal answer details Close answer detailsCorrect answerE Explanation Explanation: All of the other units are either much too big or much too small. |