Adding with Base Ten Blocks

35 + 27

35 + 27

35 is 3 longs and 5 units.

27 is 2 longs and 7 units.

35 + 27

Join together.

I now have 5 longs and 12 units.

35 + 27

Exchange 10 units for 1 long.

I now have 6 longs and 2 units.

35 + 27 = 62

35 is 3 longs and 5 units.27 is 2 longs and 7 units.

3 5

+ 2 7

Join together.I now have 5 longs and 12 units.

3 5

+ 2 7

5 12

Exchange 10 units for 1 long.1 now have 6 longs and 2 units.

3 5

+2 7

5 12

1 2

6 2

A behind the scenes look at the creation of this presentation