Hundred chart puzzles
On a hundred chart, moving right adds 1 and moving down adds 10, so the number below 36 is 46. Children use these two rules to complete small pieces of the chart and see how numbers to 100 are organized.
How to solve this
- In a number grid, moving right adds 1 and moving down adds 10; use this to fill in any missing cell.
- Start from a known cell and count the steps to reach the empty one — add or subtract accordingly.
- Check each filled cell against its neighbours: right neighbour should be 1 more, the cell below 10 more.
Examples
Below 36 in a hundred grid
46
Left of 52
51
Practice problems with answers
Solve these problems on paper or out loud, then check the answer key. The online practice and the printable worksheet give a new set every time.
23 | 24 | 25 33 | 34 | 35 __ | 44 | 45 → __
61 | 62 | __ 71 | 72 | 73 81 | 82 | 83 → __
75 | 76 | 77 85 | 86 | __ 95 | 96 | 97 → __
3 | 4 | 5 13 | 14 | 15 __ | 24 | 25 → __
41 | 42 | 43 51 | 52 | 53 61 | __ | 63 → __
47 | __ | 49 57 | 58 | 59 67 | 68 | 69 → __
10 | __ | 12 20 | 21 | 22 30 | 31 | 32 → __
32 | 33 | 34 42 | 43 | 44 52 | __ | 54 → __
Show answers
- 43
- 63
- 87
- 23
- 62
- 48
- 11
- 53