Give one example of when you would use the friendly numbers strategy to subtract. Explain why.
Answers
Answered by
33
Friendly numbers are those that ends up in tens place or end with a zero.
Like 10 20 30 40 and so on
So to subtract any number we can bring the bottom number to closest 10 by adding or subtracting and same number will be added or subtracted to the above number
e.g 66 - 37.... for 37 the closest friendly number is 40 that comes by adding 3 so 3 will be added to above and below making the question as 69 - 40 = 29
so 66 - 37 will be 29
Like 10 20 30 40 and so on
So to subtract any number we can bring the bottom number to closest 10 by adding or subtracting and same number will be added or subtracted to the above number
e.g 66 - 37.... for 37 the closest friendly number is 40 that comes by adding 3 so 3 will be added to above and below making the question as 69 - 40 = 29
so 66 - 37 will be 29
Similar questions