When a number is made up of more than one digit we can use a place value chart ... each marble represents one in the ones column. 25 has 2 tens and 5 ones so we add 2 packets of pencils to the ...

Fact families - addition and subtraction bonds to 20 Learn ... that have a different number of decimal places. Add 3-digit and 2-digit numbers Learn how to add 3-digit and 2-digit numbers using ...