Decimals · 5 sample questions from the school syllabus. Try each one, then open the answer and the worked solution.
1. How do we read the decimal number 0.5?
- AZero point five
- BFive point zero
- CZero point fifty
- DFive tenths point
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Answer: A) Zero point five
Read the whole-number part, then 'point', then each digit after the point. 0.5 is read as 'zero point five'.
3. Write the decimal equal to 4+100+1000+10009.
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Answer: A) 4.009
4 ones, 0 tenths, 0 hundredths, 9 thousandths gives 4.009.
4. On a sports day at a Delhi school, a runner's time is announced as 'twelve point zero five seconds'.
The scorer must write this time using digits.
What should the scorer write?
- A12.05 s
- B12.5 s
- C120.5 s
- D12.005 s
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Answer: A) 12.05 s
'Twelve point zero five' is whole 12 then digits 0 and 5 after the point, i.e. 12.05 seconds.
5. Saira forms a decimal of the form a.bc using the digits 2, 6 and 9 once each (a is the ones digit, b the tenths, c the hundredths).
She wants the number that is read as 'nine point two six'.
What is the place value of the digit 6 in her number?
- A6 hundredths (0.06)
- B6 tenths (0.6)
- C6 ones (6)
- D6 thousandths (0.006)
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Answer: A) 6 hundredths (0.06)
'Nine point two six' is 9.26. The 6 is the second digit after the point, so it is in the hundredths place: 1006 = 0.06.