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 2 - Number

Standard 2.N.9 - Practice solving addition sentences up to 100.

Included Skills:

Demonstrate an understanding of addition (limited to one- and two-digit numerals) with answers to 100 and the corresponding subtraction by:
using personal strategies for adding and subtracting with and without the support of manipulatives
creating and solving problems that involve addition and subtraction
explaining that the order in which numbers are added does not affect the sum (commutative property)
explaining that the order in which numbers are subtracted may affect the difference.

Achievement Indicators:
- 2N9.1 Model addition and subtraction, using concrete materials or visual representations, and record the process symbolically.
- 2N9.2 Solve a given problem, using horizontal and vertical forms.
- 2N9.3 Add a given set of numbers in two different ways, and explain why the sum is the same; e.g., 2 + 5 + 3 + 8 = (2 + 3) + 5 + 8 or 5 + 3 + (8 + 2).
- 2N9.4 Create an addition or a subtraction number sentence and a story problem for a given solution.
- 2N9.5 Solve a given problem involving a missing addend, and describe the strategy used.
- 2N9.6 Match a number sentence to a given missing addend problem.
- 2N9.7 Solve a given problem involving a missing minuend or subtrahend, and describe the strategy used.
- 2N9.8 Match a number sentence to a given missing subtrahend or minuend problem.
- 2N9.9 Refine personal strategies to increase their efficiency.

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