Unit Test Answers

If NASA scientists use positive and negative numbers to represent the time surrounding a rocket launch, what would zero mean?

Marcelino bought balloons to sell at lunches to raise money for charity.ItemCostThirty Balloons$22.50Ribbon$7.50Helium Tank Rental$15.00Marcelino claims he will raise a lot of money by selling each balloon for $1.25. Which statement is true about the amount of money he will make if he sells all of the balloons?

Which situation involves a change modeled by a positive number but an end result modeled by a negative number?

Nico and Albert are finishing up a science project. They measured the length in inches of three insects. They also found the average measurement of two more insects from a website. Bug LengthBugLength in inchesLady bugAntFireflyHoneybee0.8Deer tick0.2Which list shows the lengths from shortest to longest?

Which list orders –3.216, 5.34, –3.62, –1.8, and 5.4 from greatest to least?

Suzi works as a nanny. She can spend $40 a month on arts and crafts supplies. This month, Suzi spent $12 on specialty paper and $8 on felt. How much more can she spend this month on arts and crafts without having a negative balance?

What is ?

Jaiden is ordering 2.615, 2.65, 2.7, and 2.623 from least to greatest. Here are his steps:(1) Compare and order 2.7 and 2.65 because they have the fewest digits.(2) Compare each digit of the numbers 2.615 and 2.623. * The units digits are equal. * The tenths digits are equal. * 1 < 2 in the hundredths place so 2.615 < 2.623.(3) Combine the two lists into one: 2.7, 2.65, 2.615, 2.623.Which statement describes Jaiden’s error?

Coach DeCaro records the cross country runners’ times compared to their personal best times.3K TimesRunnerTime compared to personal bestGregor+5.6Hiroki–11.6Isabelle+3.2Juan0Karen–5.2Which runners ran slower than their personal best?

Which shows the list of numbers in order from least to greatest?, , , , –1

Gerry made a number line for a homework problem.Which point is opposite Point P?

Which list correctly orders A, B, and C from least to greatest when A = –8, B = , and C = ?

Henry says that his set of numbers includes all integers. Iliana argues that he is wrong.Which is the best way to explain why Iliana is correct?

Which number is an integer?

Which statement about numbers is true?