Add it up
Regrouping
Add some more
Subtract
Story problems
100

22+48

70

100

11+49

60

100

18+8

26

100

55-29

26

100

13 students are working on Dreambox while 8 students are working on Lexia. How many students total are in the classroom?

21 students

200

25+25

50

200

45+38

83

200

13+28

41

200

28-12

16

200

Farmer Joe's garden has 19 tomato plants. Today, he planted 17 more seeds. How many tomato plants will he have in all?

36 tomato plants

300

33+19

52

300

68+15

83

300

28+36

64

300

68-19

49

300

Josh got 34 questions on the reading test correct and 26 questions correct on the listening test. How many questions did he answer correctly in total?

60 questions

400

75+18

93

400

44+29

73

400

83+29

112

400

42-27

15

400

Our school has 44 classrooms. Featherstone Elementary School has 28 classrooms. How many classrooms do both schools have together?

72 classrooms

500

78+13

91

500

64+18

82

500

58+39

97

500

67-19

48

500

I ate 87 Tootsie Pops last week and 18 Tootsie Pops this week. How many have I eaten in the past two weeks?

105 Tootsie Pops