alleryStart learning →By what rational should 7/9 be divided to get −14/27?
- −2/3
- 3/2
- −1/2
- −3/2
Show answer and solution
Correct answer: D. −3/2
The divisor is (7/9) ÷ (−14/27) = 7/9 × (−27/14) = −3/2.
Olympiad (Class 7) Rational numbers — practice questions — page 3
Explore 63 free Rational numbers questions in Olympiad (Class 7) Mathematics. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 61–63 of 63.
Worked practice questions
Simplify (−18/42) + (12/−28) to lowest terms.
- 6/7
- −3/7
- −3/14
- −6/7
Show answer and solution
Correct answer: D. −6/7
Both terms simplify to −3/7, and −3/7 + (−3/7) = −6/7.
Which of 5/9, 4/7, 7/12 and 3/5 is the smallest?
- 4/7
- 5/9
- 7/12
- 3/5
Show answer and solution
Correct answer: B. 5/9
As decimals they are about 0.556, 0.571, 0.583 and 0.6, so 5/9 is the smallest.
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