Name
Date
DIRECTIONS: Step only on squares whose answer is
less than zero. Go across or down.
For a − b, just ask: is b bigger than a?
| START(−13) − 8↓ | 4 − 1✗ | (−8) + 14 | (−7) + 14 | 11 − 6 | (−5) + 8 |
| 8 − 12 | (−6) + 3 | 11 − 14 | 9 − 10 | (−1) − 8 | (−1) + 11 |
| (−8) + 9 | 14 − 3 | 13 − 5 | 10 − 7 | 4 − 5 | (−12) + 13 |
| (−2) + 3 | (−11) + 13 | 8 − 4 | 9 − 4 | (−11) + 5 | (−2) + 12 |
| (−8) + 11 | (−4) + 8 | 9 − 8 | (−10) + 13 | (−12) − 7 | (−5) − 8 |
| 12 − 10 | 14 − 1 | 9 − 2 | 13 − 9 | (−8) + 13 | FINISH(−8) + 2 |
Done for you (−13) − 8 = −21 ✓ → 8 − 12 = −4 ✓. 4 − 1 = 3 ✗ not that way. Carry on from there.
Write the squares you stepped on, each with its answer.
(−13) − 8 = −21 → 8 − 12 = −4 →
- How many squares did you step on altogether?
- Find a square where the two numbers are the same as one on your route, but the answer is on the other side of zero. Write both.
- One of these three always gives a negative answer, whatever numbers are used: a − b, (−a) + b, (−a) − b. Which one, and why?