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How rewards work

📒 See my notebook: everything I've played

XP: 0 in all · Level 1

Every right answer gives you XP: 6 on the easiest questions, up to 14 on the hardest, plus 2 more for each answer in a row (up to +10). Lessons you've already mastered give half, so try something new for the most! Every 200 XP, you reach a new level.200 XP to Level 2

Coins: 0

Earn 5 coins for each star in Practice. In Math Race, get 10 for a win or 5 for finishing. In Monster Battle, get 10 for beating the monster or 3 for trying. In Asteroid Blaster, get 10 for finishing a mission or 3 for trying. Every Maze Quest gives 10. Spend them in Digit's House on hats, glasses, mustaches, pets, room decorations, and big room makeovers!

Streak: 0 days

Finish a game on different days in a row to grow your streak. Miss a day and it starts over, unless you have a 🛡️ streak shield from Digit's House: it saves your streak for one missed day (you can keep 2).

Badges

Earn badges for big moments: your first 3-star round, beating every monster, a 7-day streak, finding treasures, and more. See them all, and how close you are, on the badge wall in Digit's House.

Difficulty

Get 3 right in a row and questions get trickier. Miss 2 in a row and they get easier. Each skill remembers where you are.

The games

Practice

10 questions. Get most of them right for up to 3 stars. Use a hint if you're stuck.

Math Race

Get 10 right to reach the finish before Digit. A wrong answer doesn't move you back, but the clock keeps ticking. Win and Digit gets faster next time.

Monster Battle

The monster has 8 HP and you have 3 hearts. Each right answer throws something silly at it. Get 2 in a row to switch on ⚡ super power: then every hit does double damage until you miss. A wrong answer lets the monster take a heart. No clock, so take your time.

Asteroid Blaster

10 waves of falling asteroids, each with an answer. Tap the right one to blast it. Faster shots and streaks score more points. You have 3 shields: a wrong tap or a missed asteroid uses one.

Maze Quest

Help Digit through a maze with 8 locked doors. Answer to open each door; open it on the first try for a 💎. No clock and no lives: a wrong answer just means a new question. A treasure waits at the end. Can you find all 12?

Daily Challenge

One puzzle a day, the same for everyone in your grade. Your first try counts and earns 15 coins. Do one every day to grow your Daily streak, and share your result card with family!

Brain Break

A break from math: two fun questions about animals, space, our world, and more, every day. Each right answer earns 5 coins, and you'll learn a cool fact either way.

Challenge a friend

After a game, send a link. Your friend gets the exact same questions and tries to beat your score.

Settings

Read questions out loud
🔊 Read questions out loud by itself

The 🔊 button is on every question in every grade, so anyone can tap it to hear one. This setting only decides when questions are read without tapping.

Voices come from this device and browser. Ones marked “Natural”, “Neural”, or “Google” sound most like a real person. Microsoft Edge has extra natural voices built in. Pets, monsters, and Nibbles each get their own pitch and speed.

📲 Install the appOpen agarwalmath from the home screen, full screen, like an app. Free, no app store.How to install
← Big numbers: words & forms
Level:EasierLevel 2Level 3Level 4Harder
🔀 Make a different worksheet

12 questions and an answer key (on the last page). Free to print and share with your class or family.

πagarwalmath · 4th grade · Common Core 4.NBT.A.2

🏔️ Big numbers: words & forms

Read and write big numbers (words, expanded form); compare

Name: ______________________Date: ____________

  1. 1How do you write 832,570 in words?

    • Aeight hundred forty-two thousand five hundred seventy
    • Bseventy-five thousand two hundred thirty-eight
    • Ceight hundred thirty-two thousand five hundred seventy
    • Deighty-three thousand two hundred fifty-seven

  2. 2Which number is "six hundred twelve thousand seventeen"?

    • A612,017
    • B602,017
    • C622,017
    • D6,120,170

  3. 3Which is 70,835 in expanded form?

    • A70,000 + 8,000 + 30 + 5
    • B70,000 + 800 + 30 + 5
    • C70,000 + 800 + 300 + 5
    • D7,000 + 800 + 30 + 5

  4. 4How do you write 185,073 in words?

    • Athree hundred seventy thousand five hundred eighty-one
    • Beighteen thousand five hundred seventy-three
    • Cone hundred eighty-five thousand seventy-three
    • Done hundred ninety-five thousand seventy-three

  5. 5Which is 80,845 in expanded form?

    • A80,000 + 8,000 + 40 + 5
    • B8,000 + 800 + 40 + 5
    • C80,000 + 800 + 40 + 5
    • D80,000 + 800 + 400 + 5

  6. 6How do you write 548,410 in words?

    • Afive hundred fifty-eight thousand four hundred ten
    • Bfive hundred forty-eight thousand four hundred ten
    • Cfifty-four thousand eight hundred forty-one
    • Dfourteen thousand eight hundred forty-five

  7. 7Put the numbers in order from least to greatest.

    85,732 · 65,375 · 48,339 · 92,087

    1. ________2. ________3. ________4. ________

  8. 8How do you write 747,092 in words?

    • Aseven hundred fifty-seven thousand ninety-two
    • Bseventy-four thousand seven hundred ninety-two
    • Cseven hundred forty-seven thousand ninety-two
    • Dtwo hundred ninety thousand seven hundred forty-seven

  9. 9Which number is "nine hundred ninety-four thousand three hundred five"?

    • A503,499
    • B1,004,305
    • C99,435
    • D994,305

  10. 10Which symbol makes this true? 48,524 ☐ 48,523

    • A<
    • B=
    • C>

  11. 11How do you write 154,704 in words?

    • Aone hundred fifty-four thousand seven hundred four
    • Bfifteen thousand four hundred seventy-four
    • Cfour hundred seven thousand four hundred fifty-one
    • Done hundred sixty-four thousand seven hundred four

  12. 12Put the numbers in order from least to greatest.

    41,584 · 41,045 · 50,018 · 99,512

    1. ________2. ________3. ________4. ________

Answer key: Big numbers: words & forms

  1. 1. C (eight hundred thirty-two thousand five hundred seventy)
  2. 2. A (612,017)
  3. 3. B (70,000 + 800 + 30 + 5)
  4. 4. C (one hundred eighty-five thousand seventy-three)
  5. 5. C (80,000 + 800 + 40 + 5)
  6. 6. B (five hundred forty-eight thousand four hundred ten)
  7. 7. 48,339, 65,375, 85,732, 92,087
  8. 8. C (seven hundred forty-seven thousand ninety-two)
  9. 9. D (994,305)
  10. 10. C (>)
  11. 11. A (one hundred fifty-four thousand seven hundred four)
  12. 12. 41,045, 41,584, 50,018, 99,512

Practice this lesson online with games that adjust to your child: agarwalmath.com/math/4th-grade/number-big-numbers

agarwalmath.com · free K–5 math games, no adsClass code: ____________

All 4th grade lessons and worksheets