Ufumbuzi - Kurudisha urefu
Maelezo kwa hatua
1. Andika tena nambari kutoka juu kwenda chini, zimepangwa kwa thamani zao za eneo
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu |
| 2 | 0 | 6 | ||||||
| - | 1 | 9 | 7 | . | 8 | 3 | 3 | 3 |
| . |
Weka sifuri katika mahali pa idadi tupu:
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu |
| 2 | 0 | 6 | . | 0 | 0 | 0 | 0 | |
| - | 1 | 9 | 7 | . | 8 | 3 | 3 | 3 |
| . |
2. Toa nambari kwa kutumia njia ndefu ya kutoa
Kwa sababu tarakimu ya juu (0) katika safu ya makumi ya maelfu ni ndogo sana kupata tofauti chanya, kukopa 1 kutoka kwa idadi ya kushoto (6.000) ambayo inakuwa (5.999) na kupata (10).
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu |
| 5 | 9 | 9 | 9 | 10 | ||||
| 2 | 0 | 6 | . | 0 | 0 | 0 | 0 | |
| - | 1 | 9 | 7 | . | 8 | 3 | 3 | 3 |
| . |
Toa nambari kwenye safu ya makumi ya maelfu kutoka kwa namba juu:
10-0-3=7
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu |
| 5 | 9 | 9 | 9 | 10 | ||||
| 2 | 0 | 6 | . | 0 | 0 | 0 | 0 | |
| - | 1 | 9 | 7 | . | 8 | 3 | 3 | 3 |
| . | 7 |
Toa nambari kwenye safu ya alfu kutoka kwa namba juu:
9-3=6
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu |
| 5 | 9 | 9 | 9 | 10 | ||||
| 2 | 0 | 6 | . | 0 | 0 | 0 | 0 | |
| - | 1 | 9 | 7 | . | 8 | 3 | 3 | 3 |
| . | 6 | 7 |
Toa nambari kwenye safu ya mia kutoka kwa namba juu:
9-3=6
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu |
| 5 | 9 | 9 | 9 | 10 | ||||
| 2 | 0 | 6 | . | 0 | 0 | 0 | 0 | |
| - | 1 | 9 | 7 | . | 8 | 3 | 3 | 3 |
| . | 6 | 6 | 7 |
Toa nambari kwenye safu ya kumi kutoka kwa namba juu:
9-8=1
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu |
| 5 | 9 | 9 | 9 | 10 | ||||
| 2 | 0 | 6 | . | 0 | 0 | 0 | 0 | |
| - | 1 | 9 | 7 | . | 8 | 3 | 3 | 3 |
| . | 1 | 6 | 6 | 7 |
Kwa sababu tarakimu ya juu (5) katika safu ya moja ni ndogo sana kupata tofauti chanya, kukopa 1 kutoka kwa idadi ya kushoto (20) ambayo inakuwa (19) na kupata (15).
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu |
| 1 | 9 | 15 | ||||||
| 5 | 9 | 9 | 9 | 10 | ||||
| 2 | 0 | 6 | . | 0 | 0 | 0 | 0 | |
| - | 1 | 9 | 7 | . | 8 | 3 | 3 | 3 |
| . | 1 | 6 | 6 | 7 |
Toa nambari kwenye safu ya moja kutoka kwa namba juu:
15-7=8
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu |
| 1 | 9 | 15 | ||||||
| 5 | 9 | 9 | 9 | 10 | ||||
| 2 | 0 | 6 | . | 0 | 0 | 0 | 0 | |
| - | 1 | 9 | 7 | . | 8 | 3 | 3 | 3 |
| 8 | . | 1 | 6 | 6 | 7 |
Toa nambari kwenye safu ya kumi kutoka kwa namba juu:
9-9=0
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu |
| 1 | 9 | 15 | ||||||
| 5 | 9 | 9 | 9 | 10 | ||||
| 2 | 0 | 6 | . | 0 | 0 | 0 | 0 | |
| - | 1 | 9 | 7 | . | 8 | 3 | 3 | 3 |
| 0 | 8 | . | 1 | 6 | 6 | 7 |
Toa nambari kwenye safu ya mia kutoka kwa namba juu:
1-1=0
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu |
| 1 | 9 | 15 | ||||||
| 5 | 9 | 9 | 9 | 10 | ||||
| 2 | 0 | 6 | . | 0 | 0 | 0 | 0 | |
| - | 1 | 9 | 7 | . | 8 | 3 | 3 | 3 |
| 0 | 0 | 8 | . | 1 | 6 | 6 | 7 |
Jibu ni: 8.1667
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