๐ Jump to Master Edition Decimals Quiz
Part 1: Questions 1โ10
Q1. What is 7.8 + 3.5?
a) 10.3 b) 11.3 c) 11.0 d) 10.85
Q2. Calculate 12.6 – 4.25.
a) 8.45 b) 8.35 c) 8.4 d) 7.35
Q3. What is the value of 0.7 ร 0.4?
a) 2.8 b) 0.28 c) 0.028 d) 28
Q4. Which number is the largest?
a) 0.506 b) 0.6 c) 0.56 d) 0.065
Q5. Round 5.873 to two decimal places.
a) 5.87 b) 5.88 c) 5.9 d) 5.873
Q6. Express 3/4 as a decimal.
a) 0.34 b) 0.75 c) 0.43 d) 3.4
Q7. What is 0.45 as a percentage?
a) 4.5% b) 0.45% c) 45% d) 450%
Q8. In the number 9.274, what is the place value of the digit 7?
a) Tenths b) Hundredths c) Thousandths d) Units
Q9. What is 15.45 + 5?
a) 20.45 b) 15.5 c) 19.45 d) 21.45
Q10. How is the recurring decimal 0.888… written in dot notation?
a) 0.8 b) 0.88 c) 0.88 d) 8.8
Answer Key ๐ (Q1โQ10)
- Q1 โ b) 11.3
- Q2 โ a) 8.45
- Q3 โ b) 0.28
- Q4 โ b) 0.6
- Q5 โ a) 5.87
- Q6 โ b) 0.75
- Q7 โ c) 45%
- Q8 โ b) Hundredths
- Q9 โ a) 20.45
- Q10 โ a) 0.8
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Part 4: Questions 31โ40
Q31. Which number is exactly halfway between 1.4 and 2.2?
a) 1.6 b) 1.7 c) 1.8 d) 1.9
Q32. A book costs $24.50. If there is a 10% discount, what is the sale price?
a) $22.05 b) $2.45 c) $24.40 d) $26.95
Q33. What is 0.045 + 0.009?
a) 50 b) 0.5 c) 5 d) 0.054
Q34. Which is the correct representation for 0.121212…?
a) 0.12ฬ b) 0.121ฬ c) 0.12 d) 0.121
Q35. If a = 2.5 and b = 0.4, find aยฒ โ b.
a) 6.21 b) 5.85 c) 4.6 d) 2.1
Q36. A stack of 200 identical sheets of paper is 2.5 cm high. What is the thickness of one sheet?
a) 0.0125 cm b) 0.125 cm c) 0.0025 cm d) 0.05 cm
Q37. Calculate 3.6 + (0.3 ร 4).
a) 3 b) 4.8 c) 1.2 d) 30
Q38. A temperature was โ3.4โ and it rose by 5.2โ. What is the new temperature?
a) 8.6โ b) โ1.8โ c) 2.2โ d) 1.8โ
Q39. Which of the following is the largest value?
a) 2/3 b) 0.67 c) 0.6 d) 66%
Q40. A cyclist travels 4.5 km in 10 minutes. What is their speed in km/h?
a) 27 km/h b) 45 km/h c) 11.25 km/h d) 22.5 km/h
Answer Key ๐ (Q31โQ40)
- Q31 โ b) 1.8 (halfway between 1.4 and 2.2)
- Q32 โ a) $22.05 (10% of 24.50 = 2.45, subtract = 22.05)
- Q33 โ d) 0.054
- Q34 โ a) 0.12ฬ (recurring 12)
- Q35 โ aยฒ โ b = 6.25 โ 0.4 = 5.85 โ b) 5.85
- Q36 โ 2.5 รท 200 = 0.0125 cm โ a) 0.0125 cm
- Q37 โ 3.6 + (0.3 ร 4) = 3.6 + 1.2 = 4.8 โ b) 4.8
- Q38 โ โ3.4 + 5.2 = 1.8โ โ d) 1.8โ
- Q39 โ 2/3 โ 0.666…, 0.67 is rounded, 66% = 0.66, so largest is b) 0.67
- Q40 โ 4.5 km in 10 min = 27 km/h โ a) 27 km/h
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