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# What two number multiply to get 16 and add to get -10?

Updated: 10/19/2022

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Q: What two number multiply to get 16 and add to get -10?
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### What is a trick for multiplying by the 12s?

One trick for multiplying by 12 is to multiply the number by 10 and then add two times the number. For example, if you want to multiply 7 by 12, first multiply 7 by 10 to get 70, and then add 7*2=14 to get 84.

### What two number multiply to equal -210 and add to equal 11?

The numbers are: 21 and -10

### 100 times 100?

Apart from using a calculator, specifically if you multiply a whole number by a power of 10:* To multiply a whole number by 10, add a zero to the whole number. * To multiply a whole number by 100, add two zeros to the whole number. * Etc.

### How do you multiply a three-digit number by a two-digit number?

Multiply the three-digit number by the one's digit, or last digit, of the two-digit number. That is your first part. Now multiply by the second-to-last digit, or ten's digit, and multiply the result by 10. That is your second part. Add the two parts and that is your answer.

### How can you multiply a number by 10?

to multiply a number by 10, all you have to do is add zeros at the end of the number. Below are examples: 10*1=10 10*10=100 10*100=1000

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