Remove ads and gain access to the arcade and premium games!

SubscribeUnlock 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.

Need some help or instruction on how to do this skill?

Want a paper copy? Print a generated PDF for this skill.

Share MathGames with your students, and track their progress.

See how you scored compared to other students from around the world.

Learn Math Together.

Grade 7 - Number

Standard 7.N.2 - Practice estimating sums, differences, and products with decimals.

Included Skills:

Demonstrate an understanding of the addition, subtraction, multiplication and division of decimals to solve problems (for more than 1-digit divisors or 2-digit multipliers, the use of technology is expected).

• Solve a given problem involving the addition of two or more decimal numbers.

• Solve a given problem involving the subtraction of decimal numbers.

• Solve a given problem involving the multiplication of decimal numbers.

• Solve a given problem involving the multiplication or division of decimal numbers with 2-digit multipliers or 1-digit divisors (whole numbers or decimals) without the use of technology.

• Solve a given problem involving the multiplication or division of decimal numbers with more than 2-digit multipliers or 1-digit divisors (whole numbers or decimals) with the use of technology.

• Place the decimal in a sum or difference, using front-end estimation; e.g., for 4.5 + 0.73 + 256.458, think 4 + 256, so the sum is greater than 260.

• Place the decimal in a product, using front-end estimation; e.g., for $12.33 × 2.4, think $12 × 2, so the product is greater than $24.

• Place the decimal in a quotient, using front-end estimation; e.g., for 51.50 m ÷ 2.1, think 50 m ÷ 2, so the quotient is approximately 25 m.

• Check the reasonableness of solutions, using estimation.

• Solve a given problem that involves operations on decimals (limited to thousandths), taking into consideration the order of operations.

If you notice any problems, please let us know.