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 |
| 9 | 0 | 7 | . | 9 | 0 | 7 | |
| - | 7 | 0 | 9 | . | 7 | 0 | 9 |
| . |
2. Toa nambari kwa kutumia njia ndefu ya kutoa
Kwa sababu tarakimu ya juu (7) katika safu ya alfu ni ndogo sana kupata tofauti chanya, kukopa 1 kutoka kwa idadi ya kushoto (90) ambayo inakuwa (89) na kupata (17).
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 17 | |||||
| 9 | 0 | 7 | . | 9 | 0 | 7 | |
| - | 7 | 0 | 9 | . | 7 | 0 | 9 |
| . |
Toa nambari kwenye safu ya alfu kutoka kwa namba juu:
17-9=8
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 17 | |||||
| 9 | 0 | 7 | . | 9 | 0 | 7 | |
| - | 7 | 0 | 9 | . | 7 | 0 | 9 |
| . | 8 |
Toa nambari kwenye safu ya mia kutoka kwa namba juu:
9-0=9
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 17 | |||||
| 9 | 0 | 7 | . | 9 | 0 | 7 | |
| - | 7 | 0 | 9 | . | 7 | 0 | 9 |
| . | 9 | 8 |
Toa nambari kwenye safu ya kumi kutoka kwa namba juu:
8-7=1
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 17 | |||||
| 9 | 0 | 7 | . | 9 | 0 | 7 | |
| - | 7 | 0 | 9 | . | 7 | 0 | 9 |
| . | 1 | 9 | 8 |
Kwa sababu tarakimu ya juu (7) katika safu ya moja ni ndogo sana kupata tofauti chanya, kukopa 1 kutoka kwa idadi ya kushoto (90) ambayo inakuwa (89) na kupata (17).
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 17 | |||||
| 8 | 9 | 17 | |||||
| 9 | 0 | 7 | . | 9 | 0 | 7 | |
| - | 7 | 0 | 9 | . | 7 | 0 | 9 |
| . | 1 | 9 | 8 |
Toa nambari kwenye safu ya moja kutoka kwa namba juu:
17-9=8
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 17 | |||||
| 8 | 9 | 17 | |||||
| 9 | 0 | 7 | . | 9 | 0 | 7 | |
| - | 7 | 0 | 9 | . | 7 | 0 | 9 |
| 8 | . | 1 | 9 | 8 |
Toa nambari kwenye safu ya kumi kutoka kwa namba juu:
9-0=9
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 17 | |||||
| 8 | 9 | 17 | |||||
| 9 | 0 | 7 | . | 9 | 0 | 7 | |
| - | 7 | 0 | 9 | . | 7 | 0 | 9 |
| 9 | 8 | . | 1 | 9 | 8 |
Toa nambari kwenye safu ya mia kutoka kwa namba juu:
8-7=1
| Thamani ya mahali | mia | kumi | moja | . | kumi | mia | alfu |
| 8 | 9 | 17 | |||||
| 8 | 9 | 17 | |||||
| 9 | 0 | 7 | . | 9 | 0 | 7 | |
| - | 7 | 0 | 9 | . | 7 | 0 | 9 |
| 1 | 9 | 8 | . | 1 | 9 | 8 |
Jibu ni: 198.198
Tulifanyaje?
Tafadhali tuache maoni yako.Kwa nini kujifunza hii
Kwa nini ujifunze hili