Search Results For “subtraction problems”

Here we have some serious 2-digit addition. On the first two pages the answers all come to just more than 100.

Check answers by carrying out a different calculation eg double to check that halving is correct, or add to check that subtraction is correct.

A good revision exercise on mentally adding and subtracting multiples of 10.

Addition and subtraction of multiples of 100. Easy if you know the totals of pairs of single digits.

Revising adding and using the relationship between addition and subtraction.

Applying knowledge to add and subtract decimals mentally.

Adding tenths and hundredths. These are just like adding tens and units, but watch out for the decimal point!

Time for something different: true or false?

In these questions, you are told one fact about a sum. Write down three others without doing any more calculating.

Given one fact helps with working out similar facts.

Helping to decide whether it is best to work out the answer in your head or on paper.

Pencil and paper method for subtracting crossing the tens boundary.