

Práca s výrazmi +-*/
Presentation
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
Dominik Gábor
Used 86+ times
FREE Resource
6 Slides • 10 Questions
1
Operácie s výrazmi +-*/

2
Sčítanie výrazov
Pri sčítaní odstránime zátvorky bez zmeny znamienka
2x + 5 + (3x - 2) = 2x + 5 + 3x - 2 = 5x + 3
3
Multiple Choice
Sčítaj výrazy
(5d - 6) + (3d +2) =
8d + 4
8d - 4
2d + 4
2d - 4
4
Multiple Choice
Sčítaj výrazy
(2x + 3) + (4 - x) =
3x + 7
3x + 1
x + 7
x + 1
5
Odčítanie výrazov
Pri odstraňovaní zátvoriek mi " - " zmení všetky znamienka v zátvorke
3x + 2 - (2x -3) = 3x + 2 - 2x + 3 = x + 5
6
Multiple Choice
Odčítaj výrazy
(5d - 6) - (3d + 2) =
2d - 8
2d - 4
8d - 4
8d + 8
7
Multiple Choice
Odčítaj výrazy
(y - 6) - (6 -y)
0
-12
2y - 12
2y
8
Násobenie výrazov
Pri násobení musím vynásobiť každý člen v zátvorke !!
2 * (2a + 4) = 2*2a + 2*4 = 4a + 8
9
Multiple Choice
Vynásob výrazy
3 * (3x - 5) =
9 - 15
9x - 5
3x - 15
9x - 15
10
Multiple Choice
Vynásob výrazy
(4,3 + 11v) * (-2) =
-8,6 - 22v
8,6 + 22v
8,6 - 22v
-8,6 + 22v
11
Delenie výrazov
Keď delím výraz v zátvorke, musím vydeliť každý člen !!
(6x - 8) : 2 = 6x:2 - 8:2 = 3x - 4
12
Multiple Choice
Vydeľ výrazy
(64 + 24d) : 0,8 =
8 + 3d
80 + 30
80 + 30d
8 + 24d
13
Multiple Choice
Vydeľ výrazy
(1,6y - 1,2) : (-4) =
0,4y - 0,3
4y - 3
-4y + 3
-0,4y + 0,3
14
Vynímanie pred zátvorku
Pri vynímaní pred zátvorku musím vydeliť každý člen číslom, ktoré vynímam.
22x + 12 = 2*(11x + 6)
15
Multiple Select
Vyber správne vyňaté možnosti:
24a + 12b =
2*(12a + 12b)
4*(6a + 3b)
6*(3a + 4b)
12*(2a + b)
16
Multiple Select
Vyber správne vyňaté možnosti
150x - 60 =
3*(50x + 20)
5*(3x - 5)
10*(15x - 6)
15*(10x + 4)
Operácie s výrazmi +-*/

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