Addition of Tens 

We will learn addition of tens.

Observe the group of objects in each set. One group of objects represent 10. We put groups of 10 to find the sum.

Addition of Tens


1. Complete the following

(i)

Addition of Tens

(ii)

Addition of Tens


2. Find the sum.

(i)

             T          O

             2          0

        +   7          0

                           

(ii)

             T          O

             6          0

        +   1          0

                           

(iii)

             T          O

             4          0

        +   3          0

                           

(iv)

             T          O

             8          0

        +   1          0

                           

(v)

             T          O

             5          0

        +   4          0

                           

(vi)

             T          O

             2          0

        +   5          0

                           

(vii)

             T          O

             7          0

        +   1          0

                           

(viii)

             T          O

             3          0

        +   3          0

                           

(ix)

             T          O

             3          0

        +   6          0

                           

(x)

             T          O

             5          0

        +   2          0

                           


3. Find the sum.

(i)

20 + 30 = _____

(ii)

30 + 50 = _____

(iii)

40 + 40 = _____

(iv)

60 + 10 = _____

(v)

70 + 20 = _____

(vi)

50 + 40 = _____

(vii)

30 + 50 = _____

(viii)

10 + 80 = _____

(ix)

10 + 20 + 30 = _____

(x)

10 + 20 + 40 = _____

(xi)

30 + 20 + 40 = _____

(xii)

50 + 30 + 10 = _____

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