Unit 9 Lesson 1: Exercise 1

Group these items in different ways and write how many groups these are.

18 is _____ groups of twos

18 is ____ groups of threes

18 is _____ groups of sixes

18 is _____ groups of nines

16 is _____ groups of twos

16 is ____ groups of fours

16 is _____ groups of eights

21 is _____ groups of threes

21 is ____ groups of sevens

24 is _____ groups of twos

24 is ____ groups of threes

24 is _____ groups of fours

24 is ____ groups of sixes

24 is _____ groups of eights

24 is _____ groups of twelves

30 is _____ groups of twos

30 is ____ groups of threes

30 is _____ groups of fives

30 is ____ groups of sixes

30 is _____ groups of tens

30 is _____ groups of fifteens