E
Rechnen mit Variablen
25. Gleichungen
Problems you can solve by equations
EQ 3.1
Three consecutive multiples of three ad up to 333.
What is the largest of the three numbers?
EQ 3.2
One number is one half of a second number,
which is 9 less than a third number. The average
of the three numbers is 18.
What are the three numbers?
twice … doppelt
EQ 3.3
If John had 10 CDs more, he would have twice as
many as he would have if he had 10 less. How
many CDs does John have?
office … Büro
to join … eintreten
to employ … beschäftigen
employees … Beschäftigte
EQ 3.4
The number of women working in a certain office
equals the number of men. If one man leaves and
three women join, then there will be twice as
many women as men working in this office.
What was the total number of employees at the
first time?
even numbers …
gerade Zahlen
EQ 3.5
The sum of three consecutive even numbers is
a) four times, b) six times the smallest of them.
Find the three numbers.
EQ. 3.6
The sum of three consecutive multiples of nine is
108. Find the three numbers.
EQ 3.7
One pair of the sides of a square is doubled the
other one is increaed by 6 cm.
The new rectangle has a perimeter of 96 cm.
What is the area of the original square?
to watch TV …
fernsehen
twice … zweimal
EQ 3.8
Andy watches TV twice as many hours a week as
Betty, who watches twice as many as Chris.
Andy watches 15 hours more then Chris.
How many hours a week does Betty watch TV?
to subtract … subtrahieren
difference … Differenz
EQ 3.9
If you subtract the difference of 8 and a number
from 21 you get 15. What is the number?
EQ 3.10
Three times a number is 20 less than five times
the number.
Find the number.
consecutive …
aufeinander folgend
multiples of three …
Vielfache von drei
less … weniger
average … Mittelwert
pair of sides …
Seitenpaar
square … Quadrat
to incrase … (an) wachsen
rectangle … Rechteck
© Österreichischer Bundesverlag Schulbuch GmbH & Co. KG, Wien 2013 | www.oebv.at | Mach mit Mathematik 3 | ISBN 978-3-209-07127-9
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