With tables already known ‘off by heart’, mental multiplication includes multiplying tens and units by units (25 x 6 etc) and units and tenths by units (3.4 x 5 etc). Square numbers will also be known. The standard written method of multiplication will be used efficiently when necessary with numbers up to 4-Long multiplication, digits by 2-digits.
Revise mental skills to help with fast, accurate calculating.
Using knowledge of place value and times tables to multiply by 10, 20, 50, 100 and 1000.
Finding the missing products. Tricky.
A summary of the main concepts involving multiplication, including multiplying by one and by zero and the relationship between multiplication and division.
Quick question sheets to check how well multiplication facts are known and concepts are understood.
A quick revision to check that tables are known and square numbers understood.
Multiply mentally using knowledge of times tables and square numbers.
Tips and hints on how to use mental methods to double and halve larger numbers, including 3-digit numbers.
Using tables knowledge and doubling to multiply by 12, 24, 18 etc.
How about trying to multiply by 14 or 16 in your head?
Multiplying by 101 or 99 in your head. Sounds difficult, but you can do it by multiplying by 100 and then adjusting.
Multiplying whole numbers and tenths by a single digit. When multiplying numbers like these it is a good idea to start with the whole number or units.
Multiply a decimal fraction by 10 or 100: remember to move the digits one place to the left or two places to the left.
Multiples and Factors
Understand multiples and factors of numbers.
Finding common multiples of pairs of numbers.
A mixed selection of questions involving multiples and making a rule from number patterns.
Use knowledge of factors to help with multiplying and dividing larger numbers: quite difficult concepts.
Primes, Squares and Cubes
Understand prime numbers and use square and cube numbers.
Reminder: the factors of a number are those numbers that divide exactly into it, without leaving a remainder. A number which only has factors of 1 and itself is called a prime number.
Continue to work with square numbers up to 20 squared. Try to learn all these.
The prime factors of a number are the factors which are also prime numbers. They can be found by using a factor tree.
More on square and cube numbers. You may have noticed that cube numbers start getting pretty big, pretty quickly.
Revise written methods of multiplication.
Using the standard written method to multiply 2-digit numbers.
The short multiplication method described, with practice pages multiplying 3-digit numbers by a single digit.
Using the standard written method to multiply decimals.
The standard, or efficient method of multiplying two 2-digit numbers.
More long multiplication practice, using the standard method.
Practice the standard method of multiplying 3-digit numbers by 2-digit numbers.
Multiplying 4-digit numbers by 2-digit numbers using the formal written method of multiplication.
Using the formal written method and squared paper to multiply 4-digit numbers by 2-digit.
Written multiplication of money.