Representing Numbers · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.

Many Ways to Show a Number

Mathematics · Number Representation & Place Value · ages 6-8
Name ______________________   Date ____________

  1. A tray holds 3 ten-rods and 5 ones cubes. Which number do the blocks show?

    • 8
    • 53
    • 35

  2. To know 'about how many' buttons are in a jar of 40, you should count every single button one by one.

    Circle one:   True   False

  3. Milo shows 52 with base-ten blocks. Priya marks 25 on her number line. They are showing the same number.

    Circle one:   True   False

  4. Three tens and 5 ones build which number?

    Answer: ______________

  5. Two hundred and fifty is built only from tens. How many tens?

    Answer: ______________

  6. A place-value chart has 3 in the hundreds column, 8 in the tens column, and 5 in the ones column. Which number is it?

    • 583
    • 358
    • 385

  7. On this 0 to 1000 number line, about where would 430 land?

    02008001000
    • Between 0 and 100
    • Between 400 and 500
    • Between 800 and 900

  8. Ravi is building 78 with base-ten blocks. He already has 8 ones cubes. How many ten-rods does he need?

    Answer: ______________

  9. A mark on a 0 to 100 number line sits just a little past the 40 mark, much closer to 40 than to 50. Which number is it most likely showing?

    • 41
    • 45
    • 49

  10. On a number line, a mark sits exactly halfway between 50 and 60. Which number is it?

    Answer: ______________

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Answer key

For grown-ups. Fold this page away before handing over the rest.

Many Ways to Show a Number W1-mt_9L3NQqgqRd-s1

  1. 35 · Each ten-rod is worth ten, so 3 ten-rods are 30. With 5 ones that makes 35.
  2. False · For an estimate, you can compare the jar to a group you already know, like 10 or 50, instead of counting each one.
  3. False · 52 and 25 use the same digits but in different spots, so they are different numbers and they sit far apart on a number line.
  4. 35 · Three tens give 30, plus 5 ones, giving 35.
  5. 25 · Two hundreds hide 20 tens, plus 5 loose tens, giving 25 tens.
  6. 385 · 3 hundreds, 8 tens, and 5 ones make 385. The columns are read hundreds, tens, ones.
  7. Between 400 and 500 · 430 is a little past 400, so it lands between the 400 and 500 marks.
  8. 7 · 78 has 7 tens and 8 ones, so 7 ten-rods go with the 8 ones cubes.
  9. 41 · A mark close to 40 means the number is only a little more than 40, like 41, not near 45 or 49.
  10. 55 · Halfway from 50 to 60 is five steps up from 50, which lands on 55.
Worksheet · LightMySky