Addition Strategies

Mental Math

10

9+10=

19

20

31+10=

41

30

45+10=

55

40

58+10=

68

50

87+10=

97

Use a Hundred Chart

10

41+1=

42

20

12+7=

19

30

60+7=

67

40

33+20=

53

50

50+13=

63

Draw Models/Make a Ten

10

12+8=

20

20

24+9=

33

30

37+7=

44

40

48+8=

56

50

77+9=

86

Use Place Value

10

15+16=

31

20

25+17=

42

30

36+24=

60

40

27+45=

72

50

56+37=

93

Word Problem

10

Millen has 10 stickers. Catherine gives him 16 stickers. How many stickers does Millen have in all?

16+10=26 stickers

20

Roy has 38 dojos. He gets 9 more dojos. How many dojos does he have now?

38+9=47 dojos

30

Julia finds 10 marbles. Maya finds 36 marbles. How many marbles do they have in all?

10+36=46 marbles

40

There are 45 apples in Ms.Xu's bag, Morris gives her 13 more apples. How many apples does Ms.Xu have now?

45+13=58

50

Lucas can draw 39 trees in one minute, Anitta can draw 48 trees in one minute. How many trees can they draw in total in one minute?

39+48=87 trees