Do you remember how we can , to help us simplify some number problems?
Round 3322 to the nearest thousand.
When we solve addition and subtraction problems, estimating our answer gives us an idea of what to expect. In this video, we see how we can estimate the answer to addition or subtraction problems, using a number line to help us.
We want to estimate the answer to 258-26.
Round each of the two numbers to the nearest and then subtract them.
Find the value of 258-26.
How can we solve a problem with more than one part? Have a look at this video to see some different ways to do this.
Find the value of 570+25+4.
uses mental and written strategies for addition and subtraction involving two-, three-, four and five-digit numbers
generalises properties of odd and even numbers, generates number patterns, and completes simple number sentences by calculating missing values