
Proportionality
Presentation
•
Mathematics, English
•
7th Grade
•
Practice Problem
•
Hard
María Glez Lorenzo
Used 6+ times
FREE Resource
8 Slides • 5 Questions
1
Proportionality
2
3
4
5
Directly proportional relationship
Number of boxes of pens
The cost
6
Multiple Choice
Si una caja de rotuladores cuesta 6 €, ¿cuánto cuestan 2 cajas?
8 €
12 €
4 €
7
Write a table with this information
- Number of boxes
- Cost (€)
8
Constant of proportionality
How do we calculate it?
9
Example
Three bars of chocolate weigh 90 grames.
10
Multiple Choice
¿Cuánto pesa una sola barra de chocolate?
90
9
30
45
11
Multiple Choice
¿Cuál es la constante de proporcionalidad?
1
10
90
30
12
Multiple Choice
Por tres horas de trabajo un obrero ha cobrado 60€, ¿cuánto cobrará por 8 horas?
160 €
120 €
480€
13
Multiple Choice
Por 5 días de trabajo he ganado 390 euros. ¿Cuánto ganaré por 18 días?
1800 €
1560 €
1404 €
Proportionality
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