At the Set Up screen, select the number
5
and choose
– (subtraction). This will give you subtraction problems that
start with five bubbles. Then hit
Start.
You will be given a problem that looks like this: 5 – __ = __. (The number in
the first blank will be filled in, but you'll need to find the number for the
second blank.)
- What can you say about the two numbers that go in the blanks?