Multiply Signed Integers
Multiply Signed Integers
Same signs = positive product
To multiply numbers with the same sign, multiply the absolute value of the factors. The product is always positive.
Examples
Different signs = negative product
To multiply numbers with different signs, multiply the absolute value of the factors. The product is always negative.
Examples
To multiply more than two numbers, multiply the first two numbers following the sign rules. Then multiply that product by the third number, following the sign rules. Then multiply by the fourth number and so on.
Practice
Solve the following
1.)
2.)
3.)
4.)
Answer Key
1.) -210
2.) 2460
3.) -240
4.) 800