
Ratsionaalarvud - kordamine
Presentation
•
Mathematics
•
6th Grade
•
Easy
Mari-Liis Vähi
Used 12+ times
FREE Resource
6 Slides • 24 Questions
1
Ratsionaalarvud - kordamine
2
Tänases tunnis harjutame
Arvteljele ratsionaalarvude lisamist
Ratsionaalarvude võrdlemist
Kõiki tehteid täisarvudega
Mõisteid
3
Multiple Choice
4
5
Multiple Select
Vali antud arvtelje punktide õiged koordinaadid.
M (-5); N (-2 ); K (0); A (1,8): L (-2)
M (-4); N (-2,5 ); K (0); A (1,5): L (3,5)
M (-8); N (-7 ); K (0); A (1,8): L (-6)
6
Multiple Choice
7
Multiple Select
Järjesta arvud alates kõige väiksemast
9 25 12 8 - 0,12 0 15
12 4 12 23 0 34 12
-15 -11 -9 -0,12 0 7,9 8 23
8
Vastandarv ja arvu absoluutväärtus
Vastandarvud on arvud, mis erinevad ainult märgi poolest. Arvu 0 vastandarvuks on arv 0 ise.
Arvu kujutava punkti kaugust nullpunktist O nimetatakse arvu absoluutväärtuseks.
Arvu absoluutväärtus on positiivne arv või null. Mitte ühegi arvu absoluutväärtus ei ole negatiivne.
Vastandarvude absoluutväärtused on võrdsed: |−3|=|3| .
9
Multiple Choice
Negatiivse arvu absoluutväärtus on võrdne tema...
vastandarvuga
pöördarvuga
10
Multiple Choice
|-7 |=
7
-7
0
11
Multiple Choice
-|-9| =
9
-9
1/9
12
Multiple Choice
Arvu -3,5 vastandarv on
-5,3
-(-3,5)
-3,5
13
Täisarvude liitmine ja lahutamine
14
Multiple Choice
-150-(-150)=
300
-300
150
0
15
Multiple Choice
Arvuta. - 5 - 6 + 11
0
22
-15
12
16
Multiple Choice
-36+(-14)=
22
50
-22
-50
17
Multiple Choice
18
Multiple Choice
19
Täisarvude korrutamine ja jagamine
20
Multiple Choice
21
Multiple Choice
Vastandarvude korrutis on alati ...
positiivne.
negatiivne.
22
Multiple Choice
Kolme negatiivse arvu korrutamisel on tulemus ...
positiivne
negatiivne
23
Multiple Choice
3×(−2)×(−4)×0×5 =
0
Vastus puudub
120
- 120
24
Multiple Choice
−4×2×(−10) =
60
40
- 80
80
25
Multiple Choice
6 × (−5) : 2 =
15
- 15
10
- 10
26
Multiple Choice
−4 × (−5) =
- 9
-20
9
20
27
Multiple Choice
Mägi Everest on kõrgusega 8 850 m üle merrepinna. Arv 8 850 on
Positiivne
Negatiivne
Null
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Multiple Choice
29
Multiple Choice
30
Multiple Choice
Mida nimetatakse absoluutväärtuseks?
Positiivset arvu
Negatiivse arvu positiivset väärtust.
Arvu kujutava punkti kaugust nullpunktist.
Arvu kagugust nullist sentimeetrites.
Ratsionaalarvud - kordamine
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