Ndondomeko mu masamu

M'buku lino, tiwona malamulo a masamu okhudza momwe masamu amachitira (kuphatikizapo mawu omwe ali ndi mabakiti, kukweza mphamvu kapena kuchotsa mizu), kutsagana nawo ndi zitsanzo kuti amvetse bwino za nkhaniyi.

Njira yokonzekera zochita

Timazindikira nthawi yomweyo kuti zochitazo zimaganiziridwa kuyambira pachiyambi cha chitsanzo mpaka kumapeto, mwachitsanzo, kuchokera kumanzere kupita kumanja.

Malamulo onse

choyamba, kuchulukitsa ndi kugawa kumachitidwa, ndiyeno kuwonjezera ndi kuchotsa zotsatira zapakatikati.

Tiyeni tiwone chitsanzo mwatsatanetsatane: 2 ⋅ 4 + 12: 3.

Pamwamba pa chilichonse, tidalemba nambala yomwe imagwirizana ndi dongosolo la kuphedwa kwake, mwachitsanzo, yankho lachitsanzo lili ndi njira zitatu zapakatikati:

• 2 ⋅ 4 = 8
• 12:3 = 4
• 8 + 4 = 12

Pambuyo poyeserera pang'ono, m'tsogolomu, mutha kuchita zonse mu unyolo (m'modzi / mizere ingapo), kupitiliza mawu oyamba. Kwa ife, zikuwoneka:

2 ⋅ 4 + 12 : 3 = 8 + 4 = 12.

Ngati pali machulukitsidwe angapo ndi magawano motsatana, amachitidwanso motsatana, ndipo amatha kuphatikizidwa ngati angafune.

Kusankha:

• 5 ⋅ 6 : 3 = 10 (kuphatikiza masitepe 1 ndi 2)
• 18:9 = 2
• 7 + 10 = 17
• 17 - 2 = 15

Chitsanzo cha unyolo:

7 + 5 ⋅ 6 : 3 – 18: 9 = 7 + 10 – 2 = 15.

Zitsanzo zokhala ndi mabulaketi

Zochita m'makolo (ngati zilipo) zimayamba kuchitidwa. Ndipo mkati mwawo, dongosolo lovomerezeka lomwelo, lomwe lafotokozedwa pamwambapa, limagwira ntchito.

Yankho likhoza kugawidwa m'njira zotsatirazi:

• 7 ⋅ 4 = 28
• 28 - 16 = 12
• 15:3 = 5
• 9:3 = 3
• 5 + 12 = 17
• 17 - 3 = 14

Pokonzekera zochita, mawu omwe ali m'mabulaketi amatha kuwoneka ngati nambala / nambala imodzi. Kuti zitheke, taziwunikira mu unyolo womwe uli pansipa mu zobiriwira:

15:3 + (7 ⋅ 4 - 16) - 9: 3 = 5+ 28 - 16 - 3 = 5+ 12 - 3 = 14.

Zomangamanga m'mabulaketi

Nthawi zina pakhoza kukhala mabatani ena (otchedwa nested) mkati mwa makolo. Zikatero, zochita zomwe zili m'malangizo amkati zimachitidwa poyamba.

Mapangidwe a chitsanzo mu unyolo amawoneka motere:

11 ⋅ 4 + ( 10 : 5 + (16:2 - 12:4)) = 44 + (2+ 8 - 3) = 44 + (2+ 5) = 51.

Exponentiation / kuchotsa mizu

Zochita izi zimachitika poyambirira, mwachitsanzo, asanachuluke ndi kugawa. Komanso, ngati akukhudza mawu omwe ali m'mabulaketi, ndiye kuti mawerengedwe omwe ali mkati mwawo amachitidwa poyamba. Taganizirani chitsanzo ichi:

Ndondomeko:

• 19 - 12 = 7
• 7² = 49
• 6² = 36
• 4 ⋅ 5 = 20
• 36 + 49 = 85
• 85 + 20 = 105

Chitsanzo cha unyolo:

6² + 19 - 12² + 4 ⋅ 5 = 36 + 49 + 20 = 105.