This is the more formal method of division.
This video shows how we can use 'Smile Multiplication' tables facts to efficiently calculate problems involving 3 digits divided by 1 digit.
2 digits divided by 1 digit.
An extension of simple fact families. Understanding how to generate these fact families from simpler ones, is a particularly good strategy to have especially when tackling division problems using the 'chunking' method, when the numbers we are dealing with get bigger! See division of 3 digits by 1 digit for more information.
This is a Big Maths term meaning a group of connected mathematical facts. Understanding fact families is really useful, especially when dealing with algebraic questions (where there is a missing number in the question). To illustrate this using a simple example, if you were asked 3 + ? = 10, you could work out the missing number by creating the fact family, ie 10 - 3 = 7 so 7 is the missing number because it fits into the fact family.
A clever 'Big Maths' technique to easily calculate numbers that add together to equal 1000.
A clever 'Big Maths' technique to easily calculate numbers that add together to make 100.
This is the more formal written method of multiplying. This example shows a 3 digit number multiplied by a single digit.
A good mental method for multiplying 2 or 3 digit numbers by a single digit.
This is the more formal written method of subtraction. A firm understanding of place value is essential.
Especially useful for finding the difference between 2 numbers and illustrating that subtraction can be solved using a 'counting on' strategy.
3 digits + 3 digits
This is the more formal method of column addition. A firm understanding of place value is essential.
2 digits + 2 digits