Input/output tables – write the rule – up to 100
Learn with an example
➡️ This input/output table shows addition.
Find the rule and type the correct number in the blank.
| In | Out |
| 13 | 22 |
| 33 | 42 |
| 52 | 61 |
➡️ Rule: + _____
- Start with the number in the In column. Figure out what number, when added to it, gives the value shown in the Out column.
- 13 + 9 = 22
33 + 9 = 42
52 + 9 = 61 - This is the rule: + 9.
➡️ This input/output table shows subtraction.
Find the rule and type the correct number in the blank.
| In | Out |
| 79 | 14 |
| 87 | 22 |
| 88 | 23 |
➡️ Rule: − ____
- Start with the number in the In column. Figure out what number, when subtracted from it, gives the value shown in the Out column.
- 79 − 65 = 14
87 − 65 = 22
88 − 65 = 23 - This is the rule: − 65.
➡️ This input/output table shows addition.
Find the rule and type the correct number in the blank.
| In | Out |
| 0 | 95 |
| 2 | 97 |
| 4 | 99 |
➡️ Rule: + ____
- Start with the number in the In column. Figure out what number, when added to it, gives the value shown in the Out column.
- 0 + 95 = 95
2 + 95 = 97
4 + 95 = 99 - This is the rule: + 95.
Let’s practice! 🖊️
