Connect the ideas
Count carefully across 100 and 120.
Numbers grow to the right on a number line.
A ten is a group of ten ones.
Different parts can make the same whole.
Skip counting uses equal jumps.
Check the key ideas, then put them together independently.
Count carefully across 100 and 120.
Numbers grow to the right on a number line.
A ten is a group of ten ones.
Different parts can make the same whole.
Skip counting uses equal jumps.