por Cristina Castanon 3 anos atrás
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Subtopic
Converting to base ten
addition
Numbers in an addition number
sentence that are same number. So if it 7+7
link https://youtu.be/srHu0XuKNy0
and
on the left hand side rather than the right hand side like normal then be able to solve the problem
uses a number that is easy to work from, typically 10
For a example is 14-6 then 10 is lees 4 therefore count down
Trading off
Trading off addition
54+27= 81
1. Rearrange the equation so
that the numbers line up above
and below.
2. Do the additions one column
at a time.
Scratch
So when you count up to ten then you have to scratch the number then add again.
Expanded Form
add/subtract all the different place values together, and then add/subtract the new numbers you have. For a example
=4965
4000+900+60+5