
Täisarvude korrutamine ja jagamine
Presentation
•
Mathematics
•
6th Grade
•
Practice Problem
•
Easy
Simona Seppi
Used 30+ times
FREE Resource
13 Slides • 11 Questions
1
Täisarvude korrutamine ja jagamine
2
Tänases tunnis:
Tuletame meelde korrutamise olemuse!
Tutvume täisarvude korrutamise ja jagamisega!
Lahendame mõned ülesanded!
Tuletame meelde korrutamise seadused!
Lahendame mõned ülesanded!
3
Korrutamise olemus
Korrutamine on võrdsete liidetavate liitmine
Näiteks: 4×2=2+2+2+2=8
4
Erimärgiliste arvude korrutis on negatiivne arv.
Näide 1: 3×(−7)=(−7)+(−7)+(−7)=−21
Näide 2: (−3)×2 =(−3)+(−3)=−6
5
Multiple Choice
3×(−6) =
18
–18
6
Multiple Choice
(−6)×7 =
42
–42
7
Fill in the Blanks
Type answer...
8
Fill in the Blanks
Type answer...
9
Kahe negatiivse arvu korrutis on positiivne arv.
Teame, et vastandarvud erinevad üksteisest vaid märgi poolest. Seega arvud 4×(−3) ja −4 ×(−3) erinevad üksteisest vaid märgi poolest.
Kui 4×(−3)=−12 , siis tema vastandarv (−4)×(−3) =−(−12)=12
10
Multiple Choice
(−12)×(−2)=
–24
24
11
Multiple Choice
(−4)×(−15)=
–60
60
12
Fill in the Blanks
Type answer...
13
Fill in the Blanks
Type answer...
14
Kahe täisarvu korrutis on positiivne, kui arvude märgid on ühesugused ja negatiivne, kui arvude märgid on erinevad.
15
Kahe täisarvu jagatis on positiivne, kui arvude märgid on ühesugused ja negatiivne, kui arvude märgid on erinevad.
16
Multiple Choice
42÷(−6) =
7
–7
17
Multiple Choice
−36÷(−4) =
9
–9
18
Multiple Choice
−100÷5=
–20
20
19
20
Kuidas jälgida märki mitme arvu korrutamisel?
Näide: −1×(−2)×(−3)×(−4)=2×(−3)×(−4)= =−6×(−4)=24
21
Mis saab siis, kui üks teguritest on 0?
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Täisarvude korrutamine ja jagamine
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