10 questions · Form 1 Mathematics Bab 1: Rational Numbers
Which arithmetic statement is TRUE?
Prefer reading to quizzing? All 10 questions are listed below with the answer and explanation under each one.
1. Which arithmetic statement is TRUE?
Answer: A
-5 is further to the left than -2 on the number line, so -5 < -2.
2. Which of the following is NOT a rational number?
Answer: A
π (pi) is an irrational number because it cannot be expressed as a fraction of two integers.
3. Calculate: -3.2 x 0.5 + 1.8
Answer: A
First, (-3.2) x 0.5 = -1.6. Then, -1.6 + 1.8 = 0.2.
4. Evaluate: -13 + 56 - (-12)
Answer: A
Common denominator is 6: -26 + 56 + 36 = 66 = 1.
5. A submarine is 25 m below sea level. It descends another 15 m and then rises 10 m. What is its final depth?
Answer: A
Represent sea level as 0: Initial = -25. Descends 15: -25 - 15 = -40. Rises 10: -40 + 10 = -30 m.
6. Which law of arithmetic is illustrated by: 5 x (10 + 2) = (5 x 10) + (5 x 2)?
Answer: A
The Distributive Law states that a x (b + c) = (a x b) + (a x c).
7. Calculate: -6 x (-5) ÷ (-2)
Answer: A
First, (-6) x (-5) = 30. Then, 30 ÷ (-2) = -15.
8. Which decimal has the smallest value?
Answer: A
On a number line, -4.82 lies furthest to the left, making it the smallest.
9. Arrange the following fractions in descending order: -12, 14, -34, 12
Answer: A
Convert to common denominator 4: 24, 14, -24, -34. Descending order puts largest positive first.
10. Calculate the value of: -7 + (-4) - (-9)
Answer: A
-7 + (-4) - (-9) = -7 - 4 + 9 = -11 + 9 = -2.