Presentation on theme: "What is addition? How else can we say add? Do numbers get bigger or smaller? Can we add more than one number together? When might you use addition?"— Presentation transcript:
What is addition? How else can we say add? Do numbers get bigger or smaller? Can we add more than one number together? When might you use addition?
On a whiteboard… We are going to set out a calculation in a column. We are going to do On your boards, write it down so that your calculation looks like this… T U The biggest number always goes on the top! Now, we’re ready to add… First, we add together the units, and write the total in the units column… 7 Next, we add together the tens, then we write the total in the tens column… 4 What’s our answer?
Let’s try another… Can you set out ? Does it look like this… T U Which column do we add first? Have a go at adding the units… Which column do we add second? Have a go at adding the tens… Let’s see if you’re right! 85
Let’s get tougher… This time, we’re going to try H T U! On your boards, show me how you think you’d lay out … H T U
Fantastic- let’s practice! Head over to your tables and have a go at the questions on your sheets… Remember… You MUST only write one digit in each box You MUST make sure your digits are underneath the correct place value. You MUST show what calculation you are doing with a + symbol You MUST leave a line between each question You MUST leave a line between your place values and calculation.
Right- let’s step it up… Sometimes you add numbers which give a total of 10 or more… We know that we can only have 9 units before it becomes a ten, or 9 tens before it becomes a hundred, or 9 hundreds before it becomes a thousand and so on… H T U