Zizindikiro za kugawanika kwa manambala

M’buku lino, tiona zizindikiro za kugawikana kwa manambala kuyambira 2 mpaka 11, tikuzitsatira ndi zitsanzo kuti timvetse bwino.

Satifiketi yakugawa - iyi ndi aligorivimu, pogwiritsa ntchito zomwe mutha kudziwa mwachangu ngati nambala yomwe ikuganiziridwayo ndi yochulukira yomwe idakonzedweratu (ndiko kuti, kaya imagawika popanda chotsalira).

Chizindikiro cha kugawanika pa 2

Nambala imagawika ndi 2 pokhapokha ngati nambala yake yomaliza ili yofanana, mwachitsanzo, imagawikanso ndi ziwiri.

zitsanzo:

• 4, 32, 50, 112, 2174 - manambala omaliza a manambalawa ndi ofanana, kutanthauza kuti amagawidwa ndi 2.
• 5, 11, 37, 53, 123, 1071 - sagawidwa ndi 2, chifukwa manambala awo omaliza ndi osamvetseka.

Chizindikiro cha kugawanika pa 3

Nambala imagawika ndi 3 pokhapokha ngati kuchuluka kwa manambala ake onse kugawikanso ndi XNUMX.

zitsanzo:

• 18 - kugawidwa ndi 3, chifukwa. 1+8=9, ndipo nambala 9 imagawidwa ndi 3 (9:3=3).
• 132 - kugawidwa ndi 3, chifukwa. 1+3+2=6 ndi 6:3=2.
• 614 si kuchuluka kwa 3, chifukwa 6+1+4=11, ndipo 11 sigawidwa mofanana ndi 3. (11:3 = 3.)²/₃).

Chizindikiro cha kugawanika pa 4

nambala ziwiri

Nambala imagawika ndi 4 pokhapokha ngati kuchuluka kwa manambala kuwirikiza kawiri mu malo ake makumi khumi komanso manambala omwe ali pamalo omwewo amagawikanso ndi anayi.

zitsanzo:

• 64 - kugawidwa ndi 4, chifukwa. 6⋅2+4=16 ndi 16:4=4.
• 35 sichigawika ndi 4, chifukwa 3⋅2+5=11, ndi 11:4 2³/₄.

Chiwerengero cha manambala akulu kuposa 2

Nambala ndi kuchulukitsa kwa 4 pamene manambala ake awiri omaliza amapanga nambala yogawidwa ndi anayi.

zitsanzo:

• 344 - kugawidwa ndi 4, chifukwa. 44 ndi kuchulukitsa kwa 4 (malinga ndi ndondomeko yomwe ili pamwambapa: 4⋅2+4=12, 12:4=3).
• 5219 si kuchuluka kwa 4, chifukwa 19 sigawidwa ndi 4.

Zindikirani:

Nambala imagawidwa ndi 4 popanda chotsalira ngati:

• m'chiwerengero chake chomaliza muli manambala 0, 4 kapena 8, ndipo chiwerengero cha penultimate ndi chofanana;
• mu manambala omaliza - 2 kapena 6, ndipo pomaliza - manambala osamvetseka.

Chizindikiro cha kugawanika pa 5

Nambala imagawidwa ndi 5 ngati nambala yake yomaliza ndi 0 kapena 5.

zitsanzo:

• 10, 65, 125, 300, 3480 - ogawidwa ndi 5, chifukwa amatha mu 0 kapena 5.
• 13, 67, 108, 649, 16793 - sagawidwa ndi 5, chifukwa manambala awo omaliza si 0 kapena 5.

Chizindikiro cha kugawanika pa 6

Nambala imagawika ndi 6 ngati ndi kuchulukitsa kwa awiri ndi atatu nthawi imodzi (onani zizindikiro pamwambapa).

zitsanzo:

• 486 - kugawidwa ndi 6, chifukwa. imagawidwa ndi 2 (chiwerengero chomaliza cha 6 ndi chofanana) ndi 3 (4+8+6=18, 18:3=6).
• 712 - osagawanika ndi 6, chifukwa amangochulukitsa 2.
• 1345 - osagawanika ndi 6, chifukwa si kuchuluka kwa 2 kapena 3.

Chizindikiro cha kugawanika pa 7

Nambala imagawika ndi 7 pokhapokha ngati chiŵerengero cha katatu pa khumi ndi manambala omwe ali pamalo omwewo agawidwanso asanu ndi awiri.

zitsanzo:

• 91 - kugawidwa ndi 7, chifukwa. 9⋅3+1=28 ndi 28:7=4.
• 105 - yogawidwa ndi 7, chifukwa. 10⋅3+5=35, ndi 35:7=5 (mu nambala 105 pali khumi).
• 812 imagawika ndi 7. Pano mndandanda wotsatirawu ndi: 81⋅3+2=245, 24⋅3+5=77, 7⋅3+7=28, ndi 28:7=4.
• 302 - osagawanika ndi 7, chifukwa 30⋅3+2=92, 9⋅3+2=29, ndipo 29 sagawidwa ndi 7.

Chizindikiro cha kugawanika pa 8

nambala zitatu

Nambala imagawika ndi 8 ngati kokha kuchuluka kwa manambala pamalo omwewo, manambala owirikiza kawiri mu malo khumi, ndi kuwirikiza kanayi manambala mumalo mazana agawika ndi eyiti.

zitsanzo:

• 264 - yogawidwa ndi 8, chifukwa. 2⋅4+6⋅2+4=24 ndi 24:8=3.
• 716 - 8 sichigawanika, chifukwa 7⋅4+1⋅2+6=36, ndi 36:8 4¹/₂.

Chiwerengero cha manambala akulu kuposa 3

Nambala imagawika ndi 8 pamene manambala atatu omaliza amapanga nambala yogawika ndi 8.

zitsanzo:

• 2336 - yogawidwa ndi 8, chifukwa 336 ndi kuchulukitsa kwa 8.
• 12547 si kuchuluka kwa 8, chifukwa 547 sikugawika mofanana ndi eyiti.

Chizindikiro cha kugawanika pa 9

Nambala imagawika ndi 9 pokhapokha ngati kuchuluka kwa manambala ake onse kugawikanso ndi zisanu ndi zinayi.

zitsanzo:

• 324 - kugawidwa ndi 9, chifukwa. 3+2+4=9 ndi 9:9=1.
• 921 - osagawanika ndi 9, chifukwa 9 + 2 + 1 = 12 ndi 12:9 1¹/₃.

Chizindikiro cha kugawanika pa 10

Nambala imagawika ndi 10 ngati ikatha ndi ziro.

zitsanzo:

• 10, 110, 1500, 12760 ndi kuchulukitsa kwa 10, nambala yomaliza ndi 0.
• 53, 117, 1254, 2763 sagawidwa ndi 10.

Chizindikiro cha kugawanika pa 11

Nambala imagawika ndi 11 ngati kusiyana pakati pa manambala ngakhale osamvetseka ndi ziro kapena kugawika ndi khumi ndi limodzi.

zitsanzo:

• 737 - yogawidwa ndi 11, chifukwa. |(7+7)-3|=11, 11:11=1.
• 1364 - ogawidwa ndi 11, chifukwa |(1+6)-(3+4)|=0.
• 24587 sichigawika ndi 11 chifukwa |(2+5+7)-(4+8)|=2 ndi 2 sichigawika ndi 11.