Page 22 - NUMINO Challenge_B1

Problem solving

1 In the following multiplication problem, A and B Key Points
represent different digits. Find the digits they
represent. (There are two possible answers.) First, identify the
digit that can
replace A.

AAA
A

BBB

2 In the following multiplication problem, A and B If AB B= 4, B
represent two different digits. Find the product of is either 2 or 8.
A and B. (The digits in the cannot be 4.)

AB
BA

4
4

4

19Number Puzzles