The Facts On File Algebra Handbook

CHARTS & TABLES Inverse Operations – Measurements

CHARTS & TABLES Inverse Operations – Measurements

Inverse Operations

Inverse operations are often used to check answers for accuracy. For example,

addition can be used to check subtraction, and multiplication can be used to check

division.

25 use inverse operations 64

+ 39 to check for accuracy – 39

64 25

Measurements

Arc and Angular

Value Is the same as

Second ′′

60 seconds 1 minute

Minute ′

60 minutes 1 degree

Degree °

Right angle 90 °angle

Quadrant 90 °arc

Straight angle/straight line 180 °

Circumference/4 right angles 360 °

Capacity (and Weight), Dry

Value Is the same as

2 pints 1 quart

1 quart dry 67.20 cubic inches

8 quarts 1 peck

4 pecks 1 bushel

1 bushel 2150.42 cubic inches

Capacity (and Weight), Liquid

Value Is the same as

8 ounces 1 cup

16 ounces 1 pint

2 cups 1 pint

(continues)