Four fours

Calculate each of the integers 1 to 100 using the digit 4 exactly four times.
(Includes video)

Author: T³ United Kingdom


Tags Arithmetic, Number

Students can

(a) explore functions by choosing different input values and trying to predict the output values;

(b) make functions that are equivalent to each other;

(c) make functions that are inverses of each other.

The tns files enable either individual or class investigations - lots of ideas for classroom use are included in the Teacher Notes.

Publisher specific license