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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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Grade 4 - Number

Standard 4.N.3 - Simplify both sides of the equation. Fill in the missing number with sums up to 1000 to make the equation true.

Included Skills:

Demonstrate an understanding of addition of numbers with answers to 10 000 and their corresponding subtractions (limited to 3- and 4-digit numerals), concretely, pictorially, and symbolically, by

• using personal strategies

• using the standard algorithms

• estimating sums and differences

• solving problems

• Model addition and subtraction using concrete materials and visual representations, and record the process symbolically.

• Determine the sum of two numbers using a personal strategy (e.g., for 1326 + 548, record 1300 + 500 + 74).

• Determine the difference of two numbers using a personal strategy (e.g., for 4127 – 238, record 238 + 2 + 60 + 700 + 3000 + 127 or 4127 – 27 – 100 – 100 – 11).

• Model and explain the relationship that exists between an algorithm, place value, and number properties.

• Determine the sum and difference using the standard algorithms of vertical addition and subtraction. (Numbers are arranged vertically with corresponding place value digits aligned.)

• Describe a situation in which an estimate rather than an exact answer is sufficient.

• Estimate sums and differences using different strategies (e.g., front-end estimation and compensation).

• Solve problems that involve addition and subtraction of more than 2 numbers.

• Refine personal strategies to increase efficiency when appropriate (e.g., 3000 – 2999 should not require the use of an algorithm).

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