Mental Math Mania!
Astronauts, engineers, scientists and budget analysts at NASA need to know
their numbers. Test your skills with this math square.
Instructions:
1. Fill in the missing numbers to complete the math square.
2. Use the numbers 1 through 9 to complete the equations.
3. Each number is used only once.
4. Each row is a math equation. So is each column.
5. Three numbers are done for you.
Hint: Remember that multiplication and division are performed before
addition and subtraction.
(Solution on page 36)
22