Ufumbuzi - Kurudisha urefu
2531.58
Maelezo kwa hatua
1. Andika tena nambari kutoka juu kwenda chini, zimepangwa kwa thamani zao za eneo
| Thamani ya mahali | alfu | mia | kumi | moja | . | kumi | mia |
| 2 | 5 | 8 | 9 | . | 5 | 8 | |
| - | 5 | 8 | |||||
| . |
Weka sifuri katika mahali pa idadi tupu:
| Thamani ya mahali | alfu | mia | kumi | moja | . | kumi | mia |
| 2 | 5 | 8 | 9 | . | 5 | 8 | |
| - | 5 | 8 | . | 0 | 0 | ||
| . |
2. Toa nambari kwa kutumia njia ndefu ya kutoa
Toa nambari kwenye safu ya mia kutoka kwa namba juu:
8-0=8
| Thamani ya mahali | alfu | mia | kumi | moja | . | kumi | mia |
| 2 | 5 | 8 | 9 | . | 5 | 8 | |
| - | 5 | 8 | . | 0 | 0 | ||
| . | 8 |
Toa nambari kwenye safu ya kumi kutoka kwa namba juu:
5-0=5
| Thamani ya mahali | alfu | mia | kumi | moja | . | kumi | mia |
| 2 | 5 | 8 | 9 | . | 5 | 8 | |
| - | 5 | 8 | . | 0 | 0 | ||
| . | 5 | 8 |
Toa nambari kwenye safu ya moja kutoka kwa namba juu:
9-8=1
| Thamani ya mahali | alfu | mia | kumi | moja | . | kumi | mia |
| 2 | 5 | 8 | 9 | . | 5 | 8 | |
| - | 5 | 8 | . | 0 | 0 | ||
| 1 | . | 5 | 8 |
Toa nambari kwenye safu ya kumi kutoka kwa namba juu:
8-5=3
| Thamani ya mahali | alfu | mia | kumi | moja | . | kumi | mia |
| 2 | 5 | 8 | 9 | . | 5 | 8 | |
| - | 5 | 8 | . | 0 | 0 | ||
| 3 | 1 | . | 5 | 8 |
Andika 5 kwenye eneo la mia.
| Thamani ya mahali | alfu | mia | kumi | moja | . | kumi | mia |
| 2 | 5 | 8 | 9 | . | 5 | 8 | |
| - | 5 | 8 | . | 0 | 0 | ||
| 5 | 3 | 1 | . | 5 | 8 |
Andika 2 kwenye eneo la alfu.
| Thamani ya mahali | alfu | mia | kumi | moja | . | kumi | mia |
| 2 | 5 | 8 | 9 | . | 5 | 8 | |
| - | 5 | 8 | . | 0 | 0 | ||
| 2 | 5 | 3 | 1 | . | 5 | 8 |
Jibu ni: 2531.58
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