Answers SY2025-26 - 1205040 MJ Grade 7 Mathematics Sem 1 CRUnit Test

Solving Problems Involving Decimals Answers

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A diver descends to a depth of –25.6 feet relative to sea level. How many feet must the diver ascend to reach sea level?

0.6 feet

25 feet

25.6 feet

256 feet

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Renaldo will write as a decimal. Which of the following methods should he use?

Multiply the fraction by to get a denominator of 100 and then write the numerator as hundredths using a decimal point.

Multiply the fraction by to get a denominator of 100 and then write the numerator as hundredths using a decimal point.

Multiply the fraction by to get a numerator of 100 and then write the denominator as hundredths using a decimal point.

Multiply the fraction by 33.3 to get a numerator of 100 and then write the denominator as hundredths using a decimal point.

Holly says 4.131131113... is a rational number. Which of the following best describes whether Holly is correct and why??

Holly is correct. Repeating decimals are always rational numbers.

Holly is correct. The number is positive and all positive numbers are rational.

Holly is incorrect. The decimal does not terminate, so it cannot be a rational number.

Holly is incorrect. The decimal part follows a pattern but does not actually repeat.

A thermometer shows a temperature of degrees. A chemist recorded this temperature in her notebook using a decimal. Which number did the chemist write in the notebook?

Negative 21.ModifyingAbove 4 with bar

Negative 21.ModifyingAbove 3 with bar

Negative 20.75

Negative 20.34

Vanessa and Zack are playing a game where the player with the lower score wins. At the end of the game, Vanessa has a score of and Zack has a score of . Which statement explains who won?

Comparing the decimal equivalents of their scores shows that Vanessa won because –3.625 is less than .

Comparing the decimal equivalents of their scores shows that Vanessa won because is less than –3.625.

Comparing the decimal equivalents of their scores shows that Zack won because –3.625 is less than .

Comparing the decimal equivalents of their scores shows that Zack won because is less than –3.625.

Which two points on the number line represent numbers that can be combined to make zero?

B and D

A and B

C and D

A and C

George is comparing two different phones. The screen of phone A has a width of 5.3 cm. The width of the screen on phone B is cm. Which statement explains which phone has the wider screen?