Ufumbuzi - Kurudisha urefu
106.771
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 |
| 1 | 0 | 8 | . | 2 | |||
| - | 1 | . | 4 | 2 | 9 | ||
| . |
Weka sifuri katika mahali pa idadi tupu:
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 1 | 0 | 8 | . | 2 | 0 | 0 | |
| - | 1 | . | 4 | 2 | 9 | ||
| . |
2. Toa nambari kwa kutumia njia ndefu ya kutoa
Kwa sababu tarakimu ya juu (0) katika safu ya alfu ni ndogo sana kupata tofauti chanya, kukopa 1 kutoka kwa idadi ya kushoto (20) ambayo inakuwa (19) na kupata (10).
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 1 | 9 | 10 | |||||
| 1 | 0 | 8 | . | 2 | 0 | 0 | |
| - | 1 | . | 4 | 2 | 9 | ||
| . |
Toa nambari kwenye safu ya alfu kutoka kwa namba juu:
10-0-9=1
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 1 | 9 | 10 | |||||
| 1 | 0 | 8 | . | 2 | 0 | 0 | |
| - | 1 | . | 4 | 2 | 9 | ||
| . | 1 |
Toa nambari kwenye safu ya mia kutoka kwa namba juu:
9-2=7
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 1 | 9 | 10 | |||||
| 1 | 0 | 8 | . | 2 | 0 | 0 | |
| - | 1 | . | 4 | 2 | 9 | ||
| . | 7 | 1 |
Kwa sababu digit ya juu (1) katika safu ya kumi ni ndogo sana kupata tofauti chanya, azima 1 kutoka kwa digit (8) katika nafasi inayofuata ya namba ambayo inakuwa (7) na kupata (11).
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 7 | 11 | ||||||
| 1 | 9 | 10 | |||||
| 1 | 0 | 8 | . | 2 | 0 | 0 | |
| - | 1 | . | 4 | 2 | 9 | ||
| . | 7 | 1 |
Toa nambari kwenye safu ya kumi kutoka kwa namba juu:
11-4=7
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 7 | 11 | ||||||
| 1 | 9 | 10 | |||||
| 1 | 0 | 8 | . | 2 | 0 | 0 | |
| - | 1 | . | 4 | 2 | 9 | ||
| . | 7 | 7 | 1 |
Toa nambari kwenye safu ya moja kutoka kwa namba juu:
7-1=6
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 7 | 11 | ||||||
| 1 | 9 | 10 | |||||
| 1 | 0 | 8 | . | 2 | 0 | 0 | |
| - | 1 | . | 4 | 2 | 9 | ||
| 6 | . | 7 | 7 | 1 |
Andika 0 kwenye eneo la kumi.
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 7 | 11 | ||||||
| 1 | 9 | 10 | |||||
| 1 | 0 | 8 | . | 2 | 0 | 0 | |
| - | 1 | . | 4 | 2 | 9 | ||
| 0 | 6 | . | 7 | 7 | 1 |
Andika 1 kwenye eneo la mia.
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 7 | 11 | ||||||
| 1 | 9 | 10 | |||||
| 1 | 0 | 8 | . | 2 | 0 | 0 | |
| - | 1 | . | 4 | 2 | 9 | ||
| 1 | 0 | 6 | . | 7 | 7 | 1 |
Jibu ni: 106.771
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