Basic lissafi: ma'anoni, misalai

A cikin wannan ɗaba'ar, za mu yi la'akari da ma'anoni, ƙa'idodi na gaba ɗaya da misalan ayyukan 4 na asali na lissafin (ilimin lissafi) tare da lambobi: ƙari, ragi, ninkawa da rarrabawa.

Bugu da kari

Bugu da kari aiki ne na lissafi wanda ke haifar da shi suman.

Sum (s) lambobi a₁, a₂... a_n ana samun su ta hanyar ƙara su, watau s = a₁ + a₂ +… + A_n.

• s - suma;
• a₁, a₂... a_n - sharuddan.

Ana nuna ƙari da wata alama ta musamman "+" (da), da adadin - "Σ".

Example: nemo jimlar lambobin.

1) 3, 5 da 23.

2) 12, 25, 30, 44.

Amsoshi:

1) 3 + 5 + 23 = 31

2) 12 + 25 + 30 + 44 = 111.

Ragewa

rage lambobi shine juzu'in aikin kari na lissafin lissafi, a sakamakon haka akwai bambancin (c). Misali:

c = a₁ - b₁ - b₂ –… – b_n

• c - bambanci;
• a₁ – rage;
• b₁, b₂... b_n – deductible.

Ana nuna raguwa da wata alama ta musamman "-" (rasa).

Example: nemo bambanci tsakanin lambobi.

1) 62 min 32 da 14.

2) 100 a cire 49, 21 da 6.

Amsoshi:

1) 62-32-14 = 16.

2) 100 - 49 - 21 - 6 = 24.

Yawaita

Yawaita aiki ne na lissafi wanda ke ƙididdigewa abun da ke ciki.

Aiki (p) lambobi a₁, a₂... a_n ana lissafta su ta hanyar ninka su, watau p = a₁ · AT₂ · … · a_n.

Ana nuna haɓakawa da alamun musamman "·" or "x".

Example: nemo samfurin lambobi.

1) 3, 10 da 12.

2) 7, 1, 9 da 15.

Amsoshi:

1) 3 · 10 · 12 = 360.

2) 7 1 9 15 = 945.

Division

Rarraba lamba shine juzu'i na ninkawa, sakamakon gajeriyar ƙididdigewa masu zaman kansu (d). Misali:

d = a: b

• d – masu zaman kansu;
• a – mu raba;
• b – mai raba.

Ana nuna rabe-rabe da alamu na musamman ":" or "/".

Example: nemo quotient.

1) 56 yana raba ta 8.

2) Raba 100 ta 5, sannan ta 2.

Amsoshi:

1) 56: 8 = 7.

2) 100: 5: 2 = 10 (100:5 = 20, 20:2 = 10).