Search Results For “subtraction exchange”

This time there?s a number square to help with subtraction. It?s interesting to see how children use the number square to help them.

Finding the difference between two numbers as well as making subtraction number sentences from the numbers given.

A mixed bag of subtraction questions, mainly crossing the tens boundary.

Subtraction by compensation means taking away more than you need and then adding some back. It can be quite an effective way to subtract.

Subtraction by decomposition is the way most adults are familiar with and is the way that children will ultimately use for larger numbers. Here is an introductory exploration of the idea.

Encourage children to make addition and subtraction come to life by writing short number stories.

Mental addition and subtraction of multiples of 100, including crossing over the thousands.

A mixed bag of addition and subtraction: good for seeing whether children can use their skills to add and subtract quickly ?in their heads?.

Mental addition and subtraction of 2-digit numbers. These are about as hard as you would expect to get without using written methods.

A reminder that subtraction is the inverse of addition, and how this can be useful when working out mental calculations.

Can you say which of these are true and which are false? A quick test of the relationship between addition and subtraction and what effect zero has.

The standard written method for subtraction. All these are 3-digits take away 2-digits and all cross the tens boundary.