Ufumbuzi - Kurudisha urefu
Maelezo kwa hatua
1. Andika tena nambari kutoka juu kwenda chini, zimepangwa kwa thamani zao za eneo
| Thamani ya mahali | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu | mamia ya maelfu | mamilioni | makumi ya mamilioni |
| 1 | 9 | |||||||||
| - | 1 | 2 | . | 0 | 0 | 1 | 2 | 1 | 2 | 5 |
| . |
Weka sifuri katika mahali pa idadi tupu:
| Thamani ya mahali | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu | mamia ya maelfu | mamilioni | makumi ya mamilioni |
| 1 | 9 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| - | 1 | 2 | . | 0 | 0 | 1 | 2 | 1 | 2 | 5 |
| . |
2. Toa nambari kwa kutumia njia ndefu ya kutoa
Kwa sababu tarakimu ya juu (0) katika safu ya makumi ya mamilioni ni ndogo sana kupata tofauti chanya, kukopa 1 kutoka kwa idadi ya kushoto (9.000000) ambayo inakuwa (8.999999) na kupata (10).
| Thamani ya mahali | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu | mamia ya maelfu | mamilioni | makumi ya mamilioni |
| 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
| 1 | 9 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| - | 1 | 2 | . | 0 | 0 | 1 | 2 | 1 | 2 | 5 |
| . |
Toa nambari kwenye safu ya makumi ya mamilioni kutoka kwa namba juu:
10-0-5=5
| Thamani ya mahali | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu | mamia ya maelfu | mamilioni | makumi ya mamilioni |
| 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
| 1 | 9 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| - | 1 | 2 | . | 0 | 0 | 1 | 2 | 1 | 2 | 5 |
| . | 5 |
Toa nambari kwenye safu ya mamilioni kutoka kwa namba juu:
9-2=7
| Thamani ya mahali | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu | mamia ya maelfu | mamilioni | makumi ya mamilioni |
| 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
| 1 | 9 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| - | 1 | 2 | . | 0 | 0 | 1 | 2 | 1 | 2 | 5 |
| . | 7 | 5 |
Toa nambari kwenye safu ya mamia ya maelfu kutoka kwa namba juu:
9-1=8
| Thamani ya mahali | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu | mamia ya maelfu | mamilioni | makumi ya mamilioni |
| 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
| 1 | 9 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| - | 1 | 2 | . | 0 | 0 | 1 | 2 | 1 | 2 | 5 |
| . | 8 | 7 | 5 |
Toa nambari kwenye safu ya makumi ya maelfu kutoka kwa namba juu:
9-2=7
| Thamani ya mahali | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu | mamia ya maelfu | mamilioni | makumi ya mamilioni |
| 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
| 1 | 9 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| - | 1 | 2 | . | 0 | 0 | 1 | 2 | 1 | 2 | 5 |
| . | 7 | 8 | 7 | 5 |
Toa nambari kwenye safu ya alfu kutoka kwa namba juu:
9-1=8
| Thamani ya mahali | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu | mamia ya maelfu | mamilioni | makumi ya mamilioni |
| 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
| 1 | 9 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| - | 1 | 2 | . | 0 | 0 | 1 | 2 | 1 | 2 | 5 |
| . | 8 | 7 | 8 | 7 | 5 |
Toa nambari kwenye safu ya mia kutoka kwa namba juu:
9-0=9
| Thamani ya mahali | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu | mamia ya maelfu | mamilioni | makumi ya mamilioni |
| 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
| 1 | 9 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| - | 1 | 2 | . | 0 | 0 | 1 | 2 | 1 | 2 | 5 |
| . | 9 | 8 | 7 | 8 | 7 | 5 |
Toa nambari kwenye safu ya kumi kutoka kwa namba juu:
9-0=9
| Thamani ya mahali | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu | mamia ya maelfu | mamilioni | makumi ya mamilioni |
| 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
| 1 | 9 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| - | 1 | 2 | . | 0 | 0 | 1 | 2 | 1 | 2 | 5 |
| . | 9 | 9 | 8 | 7 | 8 | 7 | 5 |
Toa nambari kwenye safu ya moja kutoka kwa namba juu:
8-2=6
| Thamani ya mahali | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu | mamia ya maelfu | mamilioni | makumi ya mamilioni |
| 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
| 1 | 9 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| - | 1 | 2 | . | 0 | 0 | 1 | 2 | 1 | 2 | 5 |
| 6 | . | 9 | 9 | 8 | 7 | 8 | 7 | 5 |
Toa nambari kwenye safu ya kumi kutoka kwa namba juu:
1-1=0
| Thamani ya mahali | kumi | moja | . | kumi | mia | alfu | makumi ya maelfu | mamia ya maelfu | mamilioni | makumi ya mamilioni |
| 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |||
| 1 | 9 | . | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| - | 1 | 2 | . | 0 | 0 | 1 | 2 | 1 | 2 | 5 |
| 0 | 6 | . | 9 | 9 | 8 | 7 | 8 | 7 | 5 |
Jibu ni: 6.9987875
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