Find and list all the number pairs that combine to make 5: 0+5, 1+4, and 2+3, and their reverses.
Five is a friendly number with a whole family of pairs. 0 and 5, 1 and 4, 2 and 3, all of these pairs add up to make 5.
Once you know all the ways to make 5, you know a lot of addition and subtraction facts all at once.
Mastery looks like: They can find and name all the pairs of numbers that make 5, using objects or fingers to check.
Common stumbles: Missing a pair, often 0+5; not noticing the up-one, down-one pattern between the two parts.
See it visually
Interactive, spoken-aloud tools that show this idea in motion.