Add these together in you head
How to Add numbers together in your head
First you add the tens together and store your answer to one side in your head,.
You then add the units together 8 + 7 which is 15 and store this answer next to your first part of the answer which was 90
You then add the two answers you have in your head together starting with the larger number 90 which gives you 90 + 15
So you add the two tens columns together first which is 90 + 10 = 100 and then you add the remaining units together 0 + 5 = 5
So you are now left with 100 + 5 = 105
Practice answering some more questions using your calculator.
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