Test out your knowledge of counting on in twos, threes, fives and tens with this quiz, then read on to complete the page.

Skip counting is a useful skill if you need to count sets of objects, such as pairs of shoes, gloves, the wheels on a tricycle, or even money. Counting on in twos, threes, fives and tens is easy ...

Counting additional animals—alpacas by twos, llamas by fives, and 50 yaks by 10s—results in 100 animals landing in Clarissa’s room, flamboyantly colored in bold shades and patterns.