How_To_Be_Good_At_Math
NUMBERS • CUBE NUMBERS 39 Cube number sequence Each cube number can be shown by an actual cube, made from cubes of one unit. How ...
40 NUMBERS •^ FRACTIONS Fractions A fraction is a part of a whole. We write a fraction as one number over another number. The bo ...
NUMBERS • FRACTIONS 41 The dividing line can be straight or slanted The bottom number, or denominator, shows the number of parts ...
42 NUMBERS •^ IMPROPER FRACTIONS AND MIXED NUMBERS Mixed numbers A mixed number is a whole number together with a proper fractio ...
NUMBERS • IMPROPER FRACTIONS AND MIXED NUMBERS 43 Changing a mixed number to an improper fraction If we count the eighths in one ...
44 NUMBERS •^ EQUIVALENT FRACTIONS Equivalent fractions The same fraction can be written in different ways – for example, half a ...
NUMBERS • EQUIVALENT FRACTIONS 45 = × 4 Calculating equivalent fractions To change a fraction to an equivalent fraction, we mult ...
46 NUMBERS •^ SIMPLIFYING FRACTIONS Simplifying fractions using the highest common factor Instead of going through several stage ...
NUMBERS • FINDING A FRACTION OF AN AMOUNT 47 Count your chickens A farmer has a flock of 24 chickens. If he decided to sell^3 / ...
48 NUMBERS • COMPARING FRACTIONS WITH THE SAME DENOMINATORS Comparing fractions with the same denominators When we need to compa ...
NUMBERS • COMPARING UNIT FRACTIONS 49 Comparing unit fractions Unit fractions are fractions where the numerator is 1. To compare ...
50 NUMBERS •^ COMPARING NON-UNIT FRACTIONS Now we have two fractions we can easily compare. We know that if^10 ⁄ 15 is larger th ...
NUMBERS • USING THE LOWEST COMMON DENOMINATOR 51 Using the lowest common denominator When we need to rewrite fractions to give t ...
52 NUMBERS •^ ADDING FRACTIONS Adding fractions We add fractions together by adding their numerators, but first we have to make ...
NUMBERS • SUBTRACTING FRACTIONS 53 Subtracting fractions To subtract fractions, first we check they have the same denominators. ...
54 NUMBERS •^ MULTIPLYING FRACTIONS Multiplying by whole numbers and by fractions What happens when we multiply by a fraction? L ...
NUMBERS • MULTIPLYING FRACTIONS 55 To multiply fractions we multiply the numerators to make a new numerator. Then we multiply th ...
56 NUMBERS •^ DIVIDING FRACTIONS Dividing by whole numbers and by fractions What happens when we divide a whole number by a prop ...
NUMBERS • DIVIDING FRACTIONS 57 Division revision Now it’s your turn! Try out your fraction division skills with these tricky te ...
58 NUMBERS •^ DECIMAL NUMBERS Decimals are fractions, too! The digits after the point in a decimal number are just another way o ...
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