Unlock harder levels by getting an average of 80% or higher.

Earn up to 5 stars for each level
The more questions you answer correctly, the more stars you'll unlock!

Each game has 10 questions.
Green box means correct.
Yellow box means incorrect.

Unlock harder levels by getting an average of 80% or higher.

Earn up to 5 stars for each level
The more questions you answer correctly, the more stars you'll unlock!

Each game has 10 questions.
Green box means correct.
Yellow box means incorrect.

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Math Games for Teachers

Grade 3 - Number

Standard 3.N.9 - Practice solving addition sentences with two and three digit numbers ending in zero up to 1000.

Included Skills:

Demonstrate an understanding of addition and subtraction of numbers with answers to 1000 (limited to one, two and three digit numerals), concretely, pictorially and symbolically, by:
using personal strategies for adding and subtracting with and without the support of manipulatives
creating and solving problems in context that involve addition and subtraction of numbers.

Achievement Indicators:
- 3N9.1 Model the addition of two or more given numbers, using concrete or visual representations, and record the process symbolically.
- 3N9.2 Create an addition or subtraction story problem for a given solution.
- 3N9.3 Determine the sum of two given numbers, using a personal strategy; e.g., for 326 + 48, record 300 + 60 + 14.
- 3N9.4 Refine personal strategies to increase their efficiency.
- 3N9.5 Solve a given problem involving the sum or difference of two given numbers.
- 3N9.6 Model the subtraction of two given numbers, using concrete or visual representations, and record the process symbolically.
- 3N9.7 Determine the difference of two given numbers, using a personal strategy; e.g., for 127 – 38, record 38 + 2 + 80 + 7 or 127 – 20 – 10 – 8.

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