Let's build a family! Combine the blocks.
Tap to move
Total
{{ s1_total > 0 ? s1_total : '?' }}
Tap to move
3
+
4
=
{{ s1_total }}
They can swap places!
{{ s2_swapped ? '4' : '3' }}
+
{{ s2_swapped ? '3' : '4' }}
=
7
What if we take 4 away from 7?
Tap exactly 4 blocks to remove them!
{{ block.isResult ? '3' : '7' }}
7
-
{{ s3_removedCount > 0 ? s3_removedCount : '?' }}
=
3
?
Complete the Fact Family House!
Tap numbers on the roof to fill the glowing boxes.
{{ row.op }}
=
You did it!
You are a Fact Family Master!
3
4
7