24 videos in "Computation Shortcuts"
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Ex 1 - Multiplying numbers with 25
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Ex 2 - Multiplying numbers with 25
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Ex 3 - Multiplying numbers with 25
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Ex 1 - Multiplying numbers with 11
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Ex 2 - Multiplying numbers with 11
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Ex 3 - Multiplying numbers with 11
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Ex 1 - Multiplying numbers with 5
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Ex 2 - Multiplying numbers with 5
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Ex 3 - Multiplying numbers with 5
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Ex 1 - Multiplying numbers using Line Intersection
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Ex 2 - Multiplying numbers using Line Intersection
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Ex 3 - Multiplying numbers using Line Intersection
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Ex 1 - Dividing numbers by 25
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Ex 2 - Dividing numbers by 25
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Ex 3 - Dividing numbers by 25
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Ex 1 - Dividing numbers by 5
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Ex 2 - Dividing numbers by 5
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Ex 3 - Dividing numbers by 5
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Ex 1 - Subtracting from multiples of 10
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Ex 2 - Subtracting from multiples of 10
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Ex 3 - Subtracting from multiples of 10
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Ex 1 - Squaring numbers ending with 5
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Ex 2 - Squaring numbers ending with 5
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Ex 3 - Squaring numbers ending with 5
Ex 1 - Squaring numbers ending with 5
Meets these NCTM Standards:
- How do you square a number that ends in 5?
- Is there a quick and easy shortcut or trick for squaring numbers that end in five?
- How can you find 35^2 quickly?
This video shows a good and useful method for squaring numbers that end in 5. Great for quick mental math computations. This is really a cool trick.
