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

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 534, what is the place value of the digit 5?

  2. 2. Write down the value of the digit 3 in the number 534.

  3. 3. In the number 470, what is the place value of the digit 0? Why is the digit 0 important in this number?

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

  4. 4. In the number 819, which digit is in the tens place?

  5. 5. Write the 3-digit number that consists of 7 hundreds, 2 tens, and 0 ones.

  6. 6. In the number 391, which digit has a value of 90?

  7. 7. Mia has 8 boxes. Mia puts 10 marbles into each of them. How many marbles does Mia have in total? Choose the right number sentence.

    • A. 8 × 10 = 80
    • B. 8 + 10 = 18
    • C. 8 − 10 = -2
    • D. 10 × 10 = 100

  8. 8. Calculate 46 × 10. What happens to the digits on a place-value chart when multiplying by 10?

    • A. 460. Each digit moves one place to the left and 0 fills the ones place.
    • B. 460. Each digit moves one place to the right.
    • C. 56. The tens digit goes up by one.
    • D. 4600. Each digit moves two places to the left.

  9. 9. What is the result when the number 7 is multiplied by 10 twice?

  10. 10. Ben has 17 packs of stickers. Each one contains 10 stickers. How many stickers does Ben have altogether?

  11. 11. Fill in the missing number: …… × 10 = 720.

  12. 12. Sara says that 45 × 10 = 450. Tom says 450 is the same value as 45. Is Tom correct?

    • A. No — 450 is ten times as big as 45.
    • B. Yes — they use the same digits.
    • C. Yes — the 0 does not change the value.
    • D. No — 450 is ten more than 45.

  13. 13. Compose the following place values into a single 3-digit number: 500 + 30 + 8 = ……

  14. 14. Decompose the number 582: 582 = … hundreds + … tens + … ones. Write the three digits separated by spaces (for example: 1 2 3).

  15. 15. Regroup the number 456 in terms of tens and ones: 456 = …… tens + 6 ones.

  16. 16. Complete the following regrouping: 456 = 3 hundreds + …… tens + 6 ones.

  17. 17. Regroup 335 into: 2 hundreds + …… tens + 5 ones.

  18. 18. Express the number 456 entirely in terms of ones: 456 = …… ones.

  19. 19. Compare the numbers 721 and 689 using the symbol > or <: 721 …… 689

  20. 20. Arrange these numbers in order, starting from the smallest to the greatest: 721, 689, 698.

  21. 21. Lia wants to arrange the numbers 806, 680, 608 from smallest to greatest. Write down the correct order.

  22. 22. Look at the numbers 698 and 671. Compare the digits in the tens place to explain which number is greater.

    • A. Tens digit in 698: 9, in 671: 7 — so 698 is greater.
    • B. Tens digit in 698: 9, in 671: 7 — so 671 is greater.
    • C. Tens digit in 698: 8, in 671: 1 — so 698 is greater.
    • D. The hundreds digits are the same, so the numbers are equal.

  23. 23. On a number line marked from 600 to 800, which of the numbers 689, 698, 721 is closest to 700?

  24. 24. Fill in the blanks with '>' or '<': (a) 56 …… 65 (b) 91 …… 19

    • A. (a) 56 > 65 (b) 91 < 19
    • B. (a) 56 < 65 (b) 91 > 19
    • C. (a) 56 > 65 (b) 91 > 19
    • D. (a) 56 < 65 (b) 91 < 19

  25. 25. Nina makes necklaces using 67 beads. What is 67 rounded to the nearest 10?

  26. 26. The mass of a cow is 512 kg. What is the mass of the cow rounded to the nearest 10 kg? Explain your answer.

    • A. 510 kg, because the ones digit is 2, which is less than 5, so round down.
    • B. 520 kg, because the ones digit is 2, which is less than 5, so round down.
    • C. 500 kg, because we look at the tens digit.
    • D. 512 kg, because it is already rounded.

  27. 27. The height of a tower is 512 m. What is the height of the tower rounded to the nearest 100 m?

  28. 28. Omar has 617 marbles. Is 617 closer to 600 or 700? Explain your reasoning.

    • A. Closer to 600, because the tens digit is 1, which is less than 5.
    • B. Closer to 700, because the tens digit is 1, which is less than 5.
    • C. Closer to 700, because the ones digit is 7.
    • D. It is exactly in the middle.

  29. 29. Round the number 234 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 300 when rounded to the nearest 100, and rounds to 310 when rounded to the nearest 10. What is the smallest possible whole number it could be?

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