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Earn +20 ptsQ: How do you multiply by a two double digit?
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Continue Learning about Math & Arithmetic
Double your tens digit to get your ones digits?
That means multiply it by 2. If your tens digit is 3, your ones digit is 6.
How do you multiply two-digit numbers in your head?
Practice!
How do you multiply a 3 digit number by a 2 digit number?
Here are two examples
Multiply one digit number by a two digit number?
2*10=20
How can you tell before you divide if the quotient will have two or three digits?
Mental math like if 12 into 72 it will not be a double digit if you divide 100 by 10 it will be double digits. Most times if you have a tripple digit number and divide it by double digit the answer will be a double digit.
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