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Class 8 Number Play worksheet
CBSE Mathematics. Divisibility by 3, 4, 8, 9, 11 and 12, digital roots, remainders, consecutive numbers, missing digits. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
The digital root of 125906 is:
- 23
- 5
- 4
- 6
Answer
(b) 5
1 + 2 + 5 + 9 + 0 + 6 = 23 → 5
- 2.
Is 877568 divisible by 11?
- No
- Yes
- Only if it is even
- You have to divide to tell
Answer
(a) No
21 − 20 = 1
- 3.
A number is divisible by 3 if:
- its last digit is 3
- it is odd
- the sum of its digits is divisible by 3
- its last two digits are divisible by 3
Answer
(c) the sum of its digits is divisible by 3
Section B · short answer
- 4.
Find the digital root of 2373714. Is 2373714 divisible by 9?
Answer
9; yes
digit sum 27 → 9
- 5.
Write 2040 as the sum of three consecutive numbers.
Answer
679 + 680 + 681
the middle number is 2040 ÷ 3
Section C · long answer
- 6.
When the students of a school line up in rows of 6, 9 or 5, there is always 1 left over. What is the smallest number of students (more than 1) this could be?
Answer
91 students
LCM of 6, 9 and 5 is 90; add 1
Fresh sheets for your child
In the app, every Number Play sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
Coming soon for Android and iPhone.