Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Calculator
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd We can use a calculator to help us do addition, subtraction, multiplication and division operations.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Centre of rotation
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd A shape with rotational symmetry is rotated about its centre of rotation. Example: The shape is rotated about the black dot. The black dot is the centre of rotation.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Decimal point
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd A decimal point separates the whole number part from the fraction part of the number. Examples:
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Decreasing order
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Decreasing order means from the greatest to the smallest. Example: The amounts of money are arranged in decreasing order.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Denominator
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd In a fraction, the denominator is the number below the line. Example:
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Divisible
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd A number is divisible by another number if it can be divided exactly by that number without leaving a remainder.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Divisibility rule
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd We can use the divisibility rule to test if a number is divisible by another number.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Equilateral triangle
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd An equilateral triangle has 3 equal sides and 3 equal angles. Example:
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Equivalent fraction
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Fractions that have different numerators and denominators, but the same value. Example: and are equivalent fractions. They both have a value of 0.6.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Equivalent ratio
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Ratios that have different terms, but the same value. Example: If we multiply or divide the terms of a ratio by the same number, we get an equivalent ratio. 4 : 3, 8 : 6 and 16 : 12 are equivalent ratios.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Estimate
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd A reasonable guess of the actual number.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Hundredths
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd 10 hundredths = 1 tenth
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Increasing order
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Increasing order means from the smallest to the greatest. Example: The temperatures are arranged in increasing order.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Isosceles triangle
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd An isosceles triangle has 2 equal sides and 2 equal angles. Example:
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Negative number
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd A negative number is a number which is smaller than zero. Example:
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Number sentence
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Example: ‘68 – = 76’ is a number sentence.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Numerator
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd In a fraction, the numerator is the number above the line. Example:
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd One hundred thousand
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Example: 10 ten thousands = One hundred thousand or
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd One million
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Example: 10 one hundred thousands = One million or
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Operations
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Example: Addition, subtraction, multiplication and division are types of operations.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Parallel lines
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Parallel lines are straight lines that are always the same distance apart and will never meet. Example:
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Perpendicular lines
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Perpendicular lines are straight lines that meet each other at right angles. Example:
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Positive number
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd A positive number is a number which is greater than zero. Example:
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Product
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd When we multiply numbers, the answer is called the product.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Quotient
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd When we divide a number by another number, the answer we get is called the quotient.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Ratio
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd A ratio is a comparison of quantities. Example: The ratio of the number of toadstools to the number of dragonflies is 6 : 5.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Reflective symmetry
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd A polygon has reflective symmetry if one half of the polygon is a mirror image of the other half. Example: This triangle has reflective symmetry.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Remainder
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Remainder is the amount that is left over when a number is divided by another number.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Right-angled triangle
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd A right-angled triangle is a triangle with 1 right angle. Example:
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Rotate
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Example: We rotate the rectangle in a clockwise direction to make one complete turn.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Rotational symmetry
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd A shape has rotational symmetry if it can fit exactly onto itself more than once during a complete turn. Example: This square has rotational symmetry.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Round to 1 decimal place
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd When we round a number to 1 decimal place, we look at the digits in the hundredths place. (a)If the digit < 5, we round it to the smaller tenth. (b)If the digit > 5, we round it to the bigger tenth. (c)If the digit = 5, we round it to the bigger tenth.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Round to the nearest whole number
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd When we round a number to the nearest whole number, we look at the digits in the tenths place. (a)If the digit < 5, we round it to the smaller one. (b)If the digit > 5, we round it to the bigger one. (c)If the digit = 5, we round it to the bigger one.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Scalene triangle
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd A scalene triangle is a triangle with 3 sides of 3 different lengths. It has no equal angles. Example:
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Simplest form
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd We get the simplest form of a ratio when we cannot divide the terms further by any other common factors, except 1. Example: 4 : 3 is the ratio in its simplest form.
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Tenths
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd 10 tenths = 1 one
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd Terms
Maths SMART Grade 5 © 2012 Alston Publishing House Pte Ltd The numbers in a ratio are known as terms. Example: The ratio of the number of toadstools to the number of dragonflies is 6 : 5. The numbers 6 and 5 are terms.