Split to add

Ria has to find : 26 + 13 Splitting 26 and 13 can make it easier to add.
Split to add 26 and 13

26	+	13
/ \		/ \
20 +	+	10 +

Choose the correct grouping to add 26 and 13:

20 + 6 + 3 20 + 10 + 6 + 3 20 + 30 +6

Please fill out the fields marked in red.

Explanation

Well done !

Explanation

Wrong answer !

Explanation :

Ria has to find : 26 + 13 Splitting 26 and 13 can make it easier to add.
Split to add 26 and 13

26	+	13
/ \		/ \
20 +	+	10 +

Choose the correct grouping to add 26 and 13:

20 + 6 + 3 20 + 10 + 6 + 3 20 + 30 +6