Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Add mentally

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Add mentally When we add numbers mentally, we are trying to find a quick way of adding the numbers in our heads. Example: Add 427 and 298 mentally.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Bar graph

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Bar graph A bar graph uses bars instead of pictures or symbols to show data. Example:

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Centimetre (cm)

Centimetre (cm) A unit of measurement for length. Example: Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Centimetre (cm) A unit of measurement for length. Example: The length from the 0 mark to the 1 mark on the ruler is 1 centimetre (or 1 cm).

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Century

Century A century is a period of 100 years. Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Century A century is a period of 100 years.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Common denominator

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Common denominator Example: The fractions and have the same denominator. We say that they have a common denominator.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Common numerator

Common numerator Example: The fractions and have the same numerator. Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Common numerator Example: The fractions and have the same numerator. We say that they have a common numerator.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Decade

Decade A decade is a period of 10 years. Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Decade A decade is a period of 10 years.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Denominator

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Denominator In a fraction, the denominator is the number below the line. Example:

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Double

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Double When we find the double of a number, we add the number to itself. Example: Double 100 = 100 + 100 So, double 100 = 200.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Duration

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Duration Example: A carnival lasted for 4 days. We can also say that the duration of the carnival was 4 days.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Equivalent fractions

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Equivalent fractions Fractions that have different numerators and denominators, but the same value. Example: So, is an equivalent fraction of .

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Frequency

Frequency The number of times something occurs. Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Frequency The number of times something occurs.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Frequency table

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Frequency table A table that lists items and shows the frequency or number of times they occur. Example: From the frequency table, we know that 3 children like bananas best.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Gram (g)

Gram (g) A unit of measurement for mass. Example: Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Gram (g) A unit of measurement for mass. Example: The mass of the apple is 200 grams (or 200 g).

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Half

Half When we find half of a number, we divide the number by 2. Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Half When we find half of a number, we divide the number by 2. Example: 80 ÷ 2 = 40 So, half of 80 is 40.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Interval

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Interval Example: When we count on in weeks, we are counting on in intervals of 7 days.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Kilogram (kg)

Kilogram (kg) A unit of measurement for mass. Example: Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Kilogram (kg) A unit of measurement for mass. Example: The total mass of the four oranges is 1 kilogram (or 1 kg).

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Kilometre (km)

Kilometre (km) A unit of measurement for length. Example: Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Kilometre (km) A unit of measurement for length. Example: Ari jogs around the park twice. He runs a total distance of 1 kilometre (or 1 km).

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Litre (l)

Litre (l) A unit of measurement for capacity. Example: Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Litre (l) A unit of measurement for capacity. Example: This is a 1-litre (or 1-l) measuring jug.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Metre (m)

Metre (m) A unit of measurement for length. Example: Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Metre (m) A unit of measurement for length. Example: The length of the cabinet is 1 metre (or 1 m).

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Millilitre (ml)

Millilitre (ml) A unit of measurement for capacity. Example: Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Millilitre (ml) A unit of measurement for capacity. Example: This is a 500-millilitre (or 500-ml) measuring jug.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Number bond

Number bond A number bond shows the parts that make up the whole. Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Number bond A number bond shows the parts that make up the whole. Example:

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Numerator

Numerator In a fraction, the numerator is the number above the line. Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Numerator In a fraction, the numerator is the number above the line. Example:

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Past

Past Past is used to show that it is after a certain time. Example: Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Past Past is used to show that it is after a certain time. Example: 7.13 is 13 minutes past 7. 7.13

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Pictogram

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Pictogram A way to organise data using pictures or symbols; can also be known as a picture graph or pictograph. Example:

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Quarter past

Quarter past Example: 10.15 is a quarter past 10. 10.15 Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Quarter past Example: 10.15 is a quarter past 10. 10.15

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Quarter to

Quarter to Example: 10.45 is a quarter to 11. 10.45 Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Quarter to Example: 10.45 is a quarter to 11. 10.45

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Simplest form

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Simplest form We get the simplest form of a fraction when we cannot divide the numerator and denominator further by any common number, except 1. Example: So, is the simplest form of .

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Subtract mentally

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Subtract mentally When we subtract numbers mentally, we are trying to find a quick way of subtracting the numbers in our heads. Example: Subtract 304 from 686 mentally.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Symbol

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Symbol We use symbols to represent items in pictograms. The symbol in a pictogram can stand for more than 1 unit. Example: 3 stands for 6 children. So, 6 children like Super Ben cartoon best.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Tally chart

Tally chart A table which uses tally marks (/) to show data. Example: Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Tally chart A table which uses tally marks (/) to show data. Example:

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Tally mark

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd Tally mark We use tally marks (/) to help us record data and keep count of items.

Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd

To To is used to show that it is before a certain time. Example: Maths SMART Grade 3 © 2012 Alston Publishing House Pte Ltd To To is used to show that it is before a certain time. Example: 8.50 is 10 minutes to 9. 8.50