Best Answer

Ten plus ten is twenty. count the dots below.

* * * * * * * * * * = 10

* * * * * * * * * * = 10

* * * * * * * * * *

* * * * * * * * * *= 20

You could do it in your head and you could draw a picture like the one above. You could also simply just use a calculator

Q: 10 plus 10

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10 + 10 + 10 + 10 + 10 + 10 + 10 + 108 = 178

One method is (10×4)+(5×3) = 55 (or mentally add up from left to right).

9 + 9 + 10 + 10 = 38

100 plus 10 plus 1 plus 110 is 221 when expressed as a decimal to base 10.

10 + 10 + 10

Related questions

700.

10 + 10 + 10 + 10 + 10 + 10 + 10 + 108 = 178

10 + 10 + 10 + 10 + 10 = 50

10 + 10 + 10 + 10 + 10 + 10 = 60 10 X 6 = 60

10 + 10 + 10 + 10 = 40

25+10+10+10+1+1= 57

10 + 10 + 10 + 5 + 5 +1 = 41.

10 X 10 = 100 You can do this four ways: You can do it mentally in your head or you can add them all up on paper by lining up the numbers correctly with each other. You can use a calculator and that is the easiest way. An alternate way is to multiply 10 by 10.

48 plus 22 plus 10 plus 10 plus 9 plus 1 is equal to 100.

2 and a half plus 2 and a half plus 10 plus 10 = 25

10 + 10 + 10 = 30

25 as 10+10 is 20 plus 5 is 25