Xisaabinta aasaasiga ah: qeexitaanno, tusaalooyin

Daabacaadan, waxaan ku eegi doonaa qeexitaanno, qaacido guud iyo tusaalooyin 4 xisaabeed oo aasaasi ah oo leh tirooyinka: isku-dar, kala-goyn, isku-dhufasho iyo isku-dhufasho.

Isugeyn

Isugeyn waa hawlgal xisaabeed oo ka dhasha wadarta.

Guud ahaan (s) tirooyinka a₁, a₂... a_n waxa lagu helaa in lagu daro, ie s = a₁ + a₂ +… + A_n.

• s - wadar;
• a₁, a₂... a_n - shuruudaha.

Isku-darka waxa lagu tilmaamay calaamad gaar ah "+" (oo lagu daray), iyo qaddarka - "Σ".

Tusaale: hel wadarta tirooyinka.

1) 3, 5 iyo 23.

2) 12, 25, 30, 44.

Jawaabaha:

1) 3 + 5 + 23 = 31

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

Kala goynta

tirooyinka kala goynta waa roganka hawlgalka xisaabeed ee dheeraadka ah, taas oo ka dhalatay taas oo jirta farqiga (c). Tusaale ahaan:

c = a₁ - b₁ - b₂ – … – b_n

• c - farqiga;
• a₁ - la dhimay;
• b₁, b₂... b_n – laga jari karo.

Kala-goynta waxaa lagu tilmaamaa calaamad gaar ah "-" (laga jaray).

Tusaale: soo hel faraqa u dhexeeya tirooyinka.

1) 62 laga jaray 32 iyo 14.

2) 100 laga jaray 49, 21 iyo 6.

Jawaabaha:

1) 62 – 32 – 14 = 16.

2) 100 – 49 – 21 – 6 = 24.

Isku dhufashada

Isku dhufashada waa hawl xisaabeed xisaabisa Halabuurka.

Shaqada (p) tirooyinka a₁, a₂... a_n waxaa lagu xisaabiyaa iyadoo la dhufto, ie p = a₁ A₂ · … · ah_n.

Isku dhufashada waxaa lagu tilmaamaa calaamado gaar ah "·" or "x".

Tusaale: hel badeecada tirooyinka.

1) 3, 10 iyo 12.

2) 7, 1, 9 iyo 15.

Jawaabaha:

1) 3 · 10 · 12 = 360.

2) 7 1 9 15 = 945.

Qeybta

Qaybta tirada waa roga isku dhufashada, natiijada gaaban ayaa la xisaabiyaa gaarka ah (d). Tusaale ahaan:

d = a: b

• d - gaar ah;
• a – waan wadaagnaa;
• b – qaybiye.

Qaybinta waxaa lagu muujiyay calaamado gaar ah ":" or "/".

Tusaale: hel tirada.

1) 56 waxaa loo qaybiyaa 8.

2) 100 u qaybi 5, ka dibna 2 u qaybi.

Jawaabaha:

1) 56:8 = 7.

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