Math Competency Test - Chapter 2: Place value and rounding numbers - Variant B

Mathematics · Kelas 3 · Bab 2 · 30 soal · 2× dimainkan · oleh Arief Pratomo ✔

Place value, multiplying by 10, regrouping, comparing and ordering, rounding to 10 and 100. Same test, different numbers.

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Soal Mathematics Kelas 3 Bab 2

30 soal. Kunci jawaban dan pembahasan muncul setelah dijawab di kuis.

  1. 1. In the number 297, what is the place value of the digit 7?

  2. 2. Write down the value of the digit 2 in the number 297.

  3. 3. In the number 605, what is the place value of the digit 0? Why is the digit 0 important in this number?

    • A. Tens. It holds the tens place so the other digits stay in their places.
    • B. Ones. It holds the ones place so the other digits stay in their places.
    • C. Tens. It is not important — the number is the same without it.
    • D. Hundreds. It makes the number bigger.

  4. 4. In the number 736, which digit is in the hundreds place?

  5. 5. Write the 3-digit number that consists of 3 hundreds, 0 tens, and 9 ones.

  6. 6. In the number 674, which digit has a value of 4?

  7. 7. Alvaro has 10 jars. Alvaro puts 9 shells into each of them. How many shells does Alvaro have in total? Choose the right number sentence.

    • A. 10 × 9 = 90
    • B. 10 + 9 = 19
    • C. 10 − 9 = 1
    • D. 9 × 9 = 81

  8. 8. Calculate 83 × 10. What happens to the digits on a place-value chart when multiplying by 10?

    • A. 830. Each digit moves one place to the left and 0 fills the ones place.
    • B. 830. Each digit moves one place to the right.
    • C. 93. The tens digit goes up by one.
    • D. 8300. Each digit moves two places to the left.

  9. 9. What is the result when the number 3 is multiplied by 10 twice?

  10. 10. Dina has 21 boxes of crayons. Each one contains 10 crayons. How many crayons does Dina have altogether?

  11. 11. Fill in the missing number: …… × 10 = 390.

  12. 12. Rio says that 62 × 10 = 620. Kai says 620 is the same value as 62. Is Kai correct?

    • A. No — 620 is ten times as big as 62.
    • B. Yes — they use the same digits.
    • C. Yes — the 0 does not change the value.
    • D. No — 620 is ten more than 62.

  13. 13. Compose the following place values into a single 3-digit number: 900 + 10 + 2 = ……

  14. 14. Decompose the number 169: 169 = … hundreds + … tens + … ones. Write the three digits separated by spaces (for example: 1 2 3).

  15. 15. Regroup the number 291 in terms of tens and ones: 291 = …… tens + 1 ones.

  16. 16. Complete the following regrouping: 291 = 1 hundred + …… tens + 1 ones.

  17. 17. Regroup 418 into: 3 hundreds + …… tens + 8 ones.

  18. 18. Express the number 291 entirely in terms of ones: 291 = …… ones.

  19. 19. Compare the numbers 345 and 354 using the symbol > or <: 345 …… 354

  20. 20. Arrange these numbers in order, starting from the smallest to the greatest: 354, 345, 435.

  21. 21. Zara wants to arrange the numbers 519, 951, 195 from smallest to greatest. Write down the correct order.

  22. 22. Look at the numbers 354 and 345. Compare the digits in the tens place to explain which number is greater.

    • A. Tens digit in 354: 5, in 345: 4 — so 354 is greater.
    • B. Tens digit in 354: 5, in 345: 4 — so 345 is greater.
    • C. Tens digit in 354: 4, in 345: 5 — so 354 is greater.
    • D. The hundreds digits are the same, so the numbers are equal.

  23. 23. On a number line marked from 300 to 500, which of the numbers 345, 354, 435 is closest to 400?

  24. 24. Fill in the blanks with '>' or '<': (a) 74 …… 47 (b) 38 …… 83

    • A. (a) 74 > 47 (b) 38 < 83
    • B. (a) 74 < 47 (b) 38 > 83
    • C. (a) 74 > 47 (b) 38 > 83
    • D. (a) 74 < 47 (b) 38 < 83

  25. 25. Ali makes kites using 45 strings. What is 45 rounded to the nearest 10?

  26. 26. The mass of a camel is 785 kg. What is the mass of the camel rounded to the nearest 10 kg? Explain your answer.

    • A. 790 kg, because the ones digit is 5, which is 5 or more, so round up.
    • B. 780 kg, because the ones digit is 5, which is 5 or more, so round up.
    • C. 800 kg, because we look at the tens digit.
    • D. 785 kg, because it is already rounded.

  27. 27. The height of a bridge is 785 m. What is the height of the bridge rounded to the nearest 100 m?

  28. 28. Yusuf has 149 stamps. Is 149 closer to 100 or 200? Explain your reasoning.

    • A. Closer to 100, because the tens digit is 4, which is less than 5.
    • B. Closer to 200, because the tens digit is 4, which is less than 5.
    • C. Closer to 200, because the ones digit is 9.
    • D. It is exactly in the middle.

  29. 29. Round the number 951 to: (a) the nearest 10, (b) the nearest 100. Write both answers separated by a comma (for example: 120, 100).

  30. 30. A 3-digit number rounds to 800 when rounded to the nearest 100, and rounds to 750 when rounded to the nearest 10. What is the smallest possible whole number it could be?

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