Number Pyramids

Grade 3 · Puzzles · Page 1 of 2

Name Date
DIRECTIONS: Each brick is the sum of the two under it. Fill in from the bottom up.
1.
 
 1512 + 3 
12 12 3 5
Done for you 12 + 3 = 15 — now fill in the rest
2.
 
  
8 8 7 3
3.
 
  
9 5 8 12
4.
 
  
4 10 11 5

Number Pyramids — Working Backwards

Grade 3 · Puzzles · Page 2 of 2

DIRECTIONS: Now a bottom brick is missing. Work backwards from the brick above it.
Brick above is 14, its other brick is 6? The gap is 8.
5.
56
 
15  
3  5 2
6.
64
 
 19 
2 12  5
7.
67
 
 18 
7 9  6
8.
43
 
 11 
5 2  5
Working backwards from an answer to a missing part is how equations get solved later on.