Amy Rogers

10 more, 10 less gives strategies for mentally finding 10 more or less than a two digit number without having to count or explain the reasoning used. Adding and subtracting by tens by adding or subtracting a one from the tens place.

Lyrics

Whats ten more, whats ten less

You dont have to count or guess

Whats ten less, whats ten more

Either way youll know more sure

Take a number and whats 10 more

Get the answer right away

You dont have to count, worry or doubt

Add a 1 to the tens place

Whats 10 more than 20?

Add a 1 to the tens place

Ten more than 20 is: 30 OK

Whats 10 more than 50?

Add a 1 to the tens place

Ten more than 50 is: 60 OK

Whats 10 more than 70?

Add a 1 to the tens place

Ten more than 70 is: 80 OK

Whats 10 more than 10?

Add a 1 to the tens place

Ten more than 10 is: 20 OK

Whats ten more, whats ten less

You dont have to count or guess

Whats ten less, whats ten more

Either way youll know more sure

Take a number and whats 10 les