Primary 4 Mathematics · Chapter 9 · Answers and explanations
Lesson 9.3: Thousandths (answers)
Section A · Multiple choice 4 marks
1. In 7.003, the digit 3 is in the ____ place.1 mark
(A) tenths(B) hundredths(C) thousandths(D) ones
Answer: (C) thousandthsThe third digit after the decimal point is in the thousandths place.
2. What is the value of the digit 8 in 2.874?1 mark
(A) 8(B) 0.8(C) 0.08(D) 0.008
Answer: (B) 0.8The 8 is in the tenths place: 8 tenths = 0.8.
3. Which decimal is the same as 6 ones, 1 tenth, 2 hundredths and 5 thousandths?1 mark
(A) 6.125(B) 6.521(C) 6.1025(D) 61.25
Answer: (A) 6.1256 + 0.1 + 0.02 + 0.005 = 6.125.
4. Which decimal is equal to 0.470?1 mark
(A) 0.047(B) 4.7(C) 0.47(D) 0.407
Answer: (C) 0.47A zero at the end does not change the value: 0.470 = 0.47.
Section B · Write your answer 10 marks
5. Write 11000 as a decimal.1 mark
Answer: 0.0011 thousandth = 0.001.
6. Write 4 ones and 9 thousandths as a decimal.1 mark
Answer: 4.0094 + 0.009 = 4.009.
7. What is the value of the digit 5 in 4.053?1 mark
Answer: 0.05The 5 is in the hundredths place: 0.05.
8. Write 2.874 in expanded form: 2 + ____ + ____ + ____.2 marks
Answer: 0.8, 0.07 and 0.0042.874 = 2 + 0.8 + 0.07 + 0.004.
9. Write the decimal: 8 ones, 0 tenths, 6 hundredths and 1 thousandth.1 mark
Answer: 8.0618 + 0 + 0.06 + 0.001 = 8.061.
10. Count on in thousandths: 1.008, 1.009, ____, 1.011.1 mark
Answer: 1.010Each step is +0.001; 1.009 + 0.001 = 1.010.
11. Complete: 0.5 = 0.50 = 0.___ .1 mark
Answer: 0.5000.5 = 0.50 = 0.500.
12. Is 0.40 the same as 0.400? Explain.2 marks
Answer: YesBoth equal 4 tenths. A zero at the end of a decimal does not change its value.
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