Olympiad Test: Decimals And Fractions - 3


20 Questions MCQ Test Math Olympiad for Class 5 | Olympiad Test: Decimals And Fractions - 3


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Attempt Olympiad Test: Decimals And Fractions - 3 | 20 questions in 40 minutes | Mock test for Class 5 preparation | Free important questions MCQ to study Math Olympiad for Class 5 for Class 5 Exam | Download free PDF with solutions
QUESTION: 1

How much pizza is left on the plate?

Solution:

There are 7 slices of pizza left on the plate out of eight pieces altogether. Therefore, the fraction of pizza shown is 7/8.

QUESTION: 2

For the fraction of pizza shown in the diagram, what is the numerator?

Solution:

The diagram shows 5 slices of pizza left on the plate out of eight slices altogether. So the fraction is 5/8. The numerator is the top number, which is 5.

QUESTION: 3

What fraction has denominator 12 and equivalent to 2/3.

Solution:

The denominator is the number on the bottom of the fraction. To get an equivalent fraction with denominator 12, we have to multiply the denominator (3) by 4. Therefore, we also have to multiply the numerator (2) by 4 and we get 8/12.

QUESTION: 4

Which one of the following fractions is NOT equivalent to all the others?

Solution:

The fractions are all equivalent to 2/5 except the odd one out, which is 9/20, because when you multiply denominator and numerator by 4 you get 8/20.

QUESTION: 5

Which of the following can be written in the box 

Solution:
QUESTION: 6

Which of the following can be written in the box 

Solution:
QUESTION: 7

The equivalent fraction of 3/5 with denominator 20 is 

Solution:
QUESTION: 8

Express 8/25 as a decimal

Solution:

Divide 8 by 25 : 8÷25=0.32
OR
Make the bottom number some multiple of 10:
We can multiply 25 by 4 to make 100
So multiply top and bottom by 4. You will get 32/100.
Now, Write that fraction as a decimal: Write down 32 with the decimal point 2 spaces from the right (because 100 has 2 zeros): 0.32

QUESTION: 9

The equivalent fraction of 3/5 with numerator 9  is

Solution:
QUESTION: 10

The simplest form of 48/60 is

Solution:
QUESTION: 11

Express 4/9 as a decimal correct to 3 decimal places.

Solution:

Step 1 : There is no way to multiply 9 to become 10 or 100 or any “1 followed by 0s”, but we can calculate an approximate decimal by choosing to multiply by 111.
Step 2 : Multiply top and bottom by 111:
Step 3 : Now, 999 is nearly 1,000, so let us write down 444 with the decimal point 3 spaces from the right (because 1,000 has 3 zeros): 0.444 correct to 3 decimal places.

QUESTION: 12

The next equivalent fraction of the given fraction  is

Solution:
QUESTION: 13

Which of the following pair of fractions are equivalent?

Solution:

QUESTION: 14

Which of the following fraction is a like fraction of 1/15?

Solution:
QUESTION: 15

Express 0.85 as a fraction in its lowest terms.

Solution:

Step 1 : Write down : 0.85 /1 Step
2 : Multiply both top and bottom by 100 (because there were 2 digits after the decimal point).It will become 85 / 100.
Step 3 : Simplify the fraction : 85 and 100 have a common factor 5, so divide top and bottom by 5 and we get 17/20.

QUESTION: 16

Which of the following fraction is a unlike fraction of 3/7?

Solution:
QUESTION: 17

Which of the following is a larger fraction?

Solution:
QUESTION: 18

Which one of the following fractions is the largest?

Solution:

To compare the fractions, we need to write each of them as an equivalent fraction with a common denominator i.e. we must find the least common multiple of 36, 9, 6 and 4.
Since 9, 6 and 4 are all factors of 36, the least common multiple is 36 So change them all to equivalent fractions with denominator 36:
7/9 will become 28/36
5/6 will become 30/36
3/4 will become 27/36
Now they all have the same denominator, we just need to find the one with the largest numerator, which is 30. Therefore, 5/6 is the largest fraction.

QUESTION: 19

Which of the following is a smaller fraction?

Solution:
QUESTION: 20

Which of the following is a greater fraction?

Solution:
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