44 Part 1: The World of Numbers
CHECK POINT
Complete each division problem.- 49 z -7
- -125 z -15
- -27 z 9
34. 120 z -6
35. -981 z -9
The Least You Need to Know
- When completing an arithmetic problem, follow the order of operations: parenthe-
ses first, then exponents, then multiplication and division, and lastly, addition and
subtraction. - The distributive property says that when you need to add two numbers and then
multiply by a third, you can choose to multiply each of the first two by the third
and then add. You’ll get the same answer. - The absolute value of a number is its distance from zero on the number line.
- To add integers with the same sign, add the absolute values and keep the sign.
- To add integers with different signs, subtract the absolute values and take the sign
on the number with the larger absolute value. - To multiply or divide integers, multiply and divide without the signs. Then it the
signs of the two numbers are the same, your answer is positive. If the signs are
different, your answer is negative.