Ufumbuzi - Kurudisha urefu
511.332
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 |
| 5 | 1 | 1 | . | 9 | |||
| - | 0 | . | 5 | 6 | 8 | ||
| . |
Weka sifuri katika mahali pa idadi tupu:
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 5 | 1 | 1 | . | 9 | 0 | 0 | |
| - | 0 | . | 5 | 6 | 8 | ||
| . |
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 (90) ambayo inakuwa (89) na kupata (10).
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 10 | |||||
| 5 | 1 | 1 | . | 9 | 0 | 0 | |
| - | 0 | . | 5 | 6 | 8 | ||
| . |
Toa nambari kwenye safu ya alfu kutoka kwa namba juu:
10-0-8=2
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 10 | |||||
| 5 | 1 | 1 | . | 9 | 0 | 0 | |
| - | 0 | . | 5 | 6 | 8 | ||
| . | 2 |
Toa nambari kwenye safu ya mia kutoka kwa namba juu:
9-6=3
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 10 | |||||
| 5 | 1 | 1 | . | 9 | 0 | 0 | |
| - | 0 | . | 5 | 6 | 8 | ||
| . | 3 | 2 |
Toa nambari kwenye safu ya kumi kutoka kwa namba juu:
8-5=3
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 10 | |||||
| 5 | 1 | 1 | . | 9 | 0 | 0 | |
| - | 0 | . | 5 | 6 | 8 | ||
| . | 3 | 3 | 2 |
Toa nambari kwenye safu ya moja kutoka kwa namba juu:
1-0=1
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 10 | |||||
| 5 | 1 | 1 | . | 9 | 0 | 0 | |
| - | 0 | . | 5 | 6 | 8 | ||
| 1 | . | 3 | 3 | 2 |
Andika 1 kwenye eneo la kumi.
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 10 | |||||
| 5 | 1 | 1 | . | 9 | 0 | 0 | |
| - | 0 | . | 5 | 6 | 8 | ||
| 1 | 1 | . | 3 | 3 | 2 |
Andika 5 kwenye eneo la mia.
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 10 | |||||
| 5 | 1 | 1 | . | 9 | 0 | 0 | |
| - | 0 | . | 5 | 6 | 8 | ||
| 5 | 1 | 1 | . | 3 | 3 | 2 |
Jibu ni: 511.332
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