INVENTIONS
Name _____ Date __
Complete the year of the invention.
The cell phone was invented in Sweden by technicians at the Ericsson
Company in 19___.
The letter Fstands for a 2-digit number.
Use the clues to figure out the value of F.
CLUES:
F ≤ 9 x 9
F ÷ 10 has a remainder of 9.
The sum of the digits of F is an even number.
2 x F > 100
F ≠ 59
16
1.Which clue or pair of clues did you use first?
2.What is F? ___
3.How did you figure out the value for F? ___
4.Check your number with the clues. Show your work here.
5.Record Fon the line to complete the year of the invention.
The cell phone was invented in Sweden by technicians at the Ericsson
Company in 19___.
PROBLEM
4
Algebra Readiness Made Easy: Gr. 6
© 2008 by Greenes, Findell & Cavanagh, Scholastic Teaching Resources