Expanded Form and Odd & Even Numbers Worksheet for 9-Year-Olds

Free worksheet covering multiple subjects for age 9 students. Created with Learning Corner's AI-powered tools.

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Instructions

Let's practice our number skills! First, you will break numbers apart and put them back together. Then, you will go on an adventure to find the odd and even numbers.

Part 1: Expanded Form Puzzles

Every number has a secret code! Break the code by writing the number in expanded form (hundreds + tens + ones). Then, solve the puzzle by putting the expanded numbers back into their standard form.

A. Break the numbers apart.

1.   345 = __________ + __________ + __________
2.   819 = __________ + __________ + __________
3.   207 = __________ + __________ + __________
4.   950 = __________ + __________ + __________
5.   661 = __________ + __________ + __________

B. Put the numbers back together.

1.   700 + 20 + 3 = __________
2.   100 + 80 + 4 = __________
3.   500 + 0 + 6 = __________
4.   400 + 30 + 0 = __________
5.   200 + 90 + 9 = __________

Part 2: Odd or Even Adventure

Remember the rule! Even numbers end in 0, 2, 4, 6, or 8. Odd numbers end in 1, 3, 5, 7, or 9. For each number below, circle if it is ODD or EVEN.

Number Is it...?
318 ODD / EVEN
621 ODD / EVEN
880 ODD / EVEN
147 ODD / EVEN
534 ODD / EVEN
999 ODD / EVEN
702 ODD / EVEN



Answer Key

Part 1: Expanded Form Puzzles

A. Break the numbers apart.

1.   345 = 300 + 40 + 5
2.   819 = 800 + 10 + 9
3.   207 = 200 + 0 + 7
4.   950 = 900 + 50 + 0
5.   661 = 600 + 60 + 1

B. Put the numbers back together.

1.   700 + 20 + 3 = 723
2.   100 + 80 + 4 = 184
3.   500 + 0 + 6 = 506
4.   400 + 30 + 0 = 430
5.   200 + 90 + 9 = 299

Part 2: Odd or Even Adventure

Number Answer
318 EVEN
621 ODD
880 EVEN
147 ODD
534 EVEN
999 ODD
702 EVEN
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