Missing Added Mysteries
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Open Number Line detective
Part-Part-Whole
Fair Problems
100

23 + ? = 29. What’s the missing addend?

6

100

Solve 39 + 2.

41

100

Start at 32, jump +20, where are you?

52

100

Name 2 ways to make 48

ex: 40+8, 30+18

100

At the fair 39 people wait in line. Now 93 are in line. How many more joined?

54

200

47 + ? = 83. What’s the missing addend?

36

200

Solve 58 + 7 by making a ten first.

65

200

Start at 57, jump +30 then +5, where are you?

92

200

Which two equations both = 52? 

30+22 

26+26 

40+10

30+22

26+26


200

Jordan plays 55 min Sat, total 80 min. How many Sun?

25

300

64 + ? = 100. What number makes this true?

36

300

Solve 48 + 36

84

300

Start 14, jump +40 then +7. Where do you land?

61

300

Make 93 using tens and ones

90 tens and 3 ones

300

Nina hikes 18 miles 2nd day. 37 total. 1st day?

19

400

Mia is making bracelets. She already made 13. She wants 50 total. How many more does she need?

37

400

Solve 63 + 29

92

400

Solve 83 – 57 using jumps back on a number line.

26

400

Make 24 using TENS and ONES in 2 different ways.

ex. 2 tens and 4 ones OR 1 ten and 12 ones

400

Café sells 48 smoothies. 14 are small. How many large?

34

500

Travis is playing the flute for 28 minutes Tuesday, but need to play for 60 minutes before Friday. How many more minutes does he need to practice before then?

32

500

Solve 25 + 49

74

500

A bus has 29 kids on it. 11 get off. Use open number line. How many left?

18

500

Show two equations that = 50.

ex. 25+25 OR 30 + 20

500

A ride needs 70 tickets. You have 43. How many more tickets do you need?

27