Composing Numbers

Composer to 10

Knows number combinations to totals of 10. Quickly names parts of any whole, or the whole given parts. Doubles to 20.

You may see this:

Other Examples:

"9 and 9 is 18."
Shown 10, then 7 are secretly hidden and the remaining 3 are shown, a child quickly says “7 are hidden.”

Help your student become a(n) Composer to 10

Activities promote meaningful knowledge of all combinations up to totals of 10. Like most composing number levels, they use visual models (conceptual subitizing) and thinking strategies. For example, children understand the ideas of "add (or subtract) zero" (same number) and "add (or subtract) 1" (next or previous number). They also use commutativity (if I know 8 + 2, I know 2 + 8) and associativity (7 + 9 + 1 is 7 + (9 + 1) is 7 + 10 is 17). Activities do not use timed tests and drill without understanding.