Number, NAP_10007

Question

{{{question}}}

Worked Solution

{{{workedSolution}}}

Variant 0

DifficultyLevel

272

Question

Millie is 18 and her mother is 31 years older than Millie.

How old is Millie's mother?

Worked Solution

One strategy:
18 + 31 = 10 + 8 + 30 + 1
= 40 + 9
= 49

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Millie is 18 and her mother is 31 years older than Millie. How old is Millie's mother?
workedSolution
sm_nogap One strategy:
| | | | --------------------- | -------------- | | 18 + 31| = 10 + 8 + 30 + 1| || = 40 + 9| | | \= {{{correctAnswer}}} |
correctAnswer
49

Answers

Is Correct?Answer
✓

49

x

39

x

33

x

13

Variant 1

DifficultyLevel

274

Question

Jordy is 27 and his grandmother is 63 years older than Jordy.

How old is Jordy's grandmother?

Worked Solution

One strategy:
27 + 63 = 20 + 7 + 60 + 3
= 80 + 10
= 90

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Jordy is 27 and his grandmother is 63 years older than Jordy. How old is Jordy's grandmother?
workedSolution
sm_nogap One strategy:
| | | | --------------------- | -------------- | | 27 + 63| = 20 + 7 + 60 + 3| || = 80 + 10| | | \= {{{correctAnswer}}} |
correctAnswer
90

Answers

Is Correct?Answer
x

60

x

70

x

80

✓

90

Variant 2

DifficultyLevel

276

Question

Moulan is 16 and her grandfather is 57 years older than Moulan.

How old is Moulan's grandfather?

Worked Solution

One strategy:
16 + 57 = 10 + 6 + 50 + 7
= 60 + 13
= 73

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Moulan is 16 and her grandfather is 57 years older than Moulan. How old is Moulan's grandfather?
workedSolution
sm_nogap One strategy:
| | | | --------------------- | -------------- | | 16 + 57| = 10 + 6 + 50 + 7| || = 60 + 13| | | \= {{{correctAnswer}}} |
correctAnswer
73

Answers

Is Correct?Answer
x

63

✓

73

x

74

x

81

Variant 3

DifficultyLevel

276

Question

Jiah is 26 and her father is 48 years older than Jiah.

How old is Jiah's father?

Worked Solution

One strategy:
26 + 48 = 20 + 6 + 40 + 8
= 60 + 14
= 74

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Jiah is 26 and her father is 48 years older than Jiah. How old is Jiah's father?
workedSolution
sm_nogap One strategy:
| | | | --------------------- | -------------- | | 26 + 48| = 20 + 6 + 40 + 8| || = 60 + 14| | | \= {{{correctAnswer}}} |
correctAnswer
74

Answers

Is Correct?Answer
x

62

x

64

x

72

✓

74

Variant 4

DifficultyLevel

278

Question

Kwan is 38 and his brother is 17 years older than Kwan.

How old is Kwan's brother?

Worked Solution

One strategy:
38 + 17 = 30 + 8 + 10 + 7
= 40 + 15
= 55

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Kwan is 38 and his brother is 17 years older than Kwan. How old is Kwan's brother?
workedSolution
sm_nogap One strategy:
| | | | --------------------- | -------------- | | 38 + 17| = 30 + 8 + 10 + 7| || = 40 + 15| | | \= {{{correctAnswer}}} |
correctAnswer
55

Answers

Is Correct?Answer
✓

55

x

51

x

45

x

41

Variant 5

DifficultyLevel

280

Question

Aliyeh is 22 and her sister is 29 years older than Aliyeh.

How old is Aliyeh's sister?

Worked Solution

One strategy:
22 + 29 = 20 + 2 + 20 + 9
= 40 + 11
= 51

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Aliyeh is 22 and her sister is 29 years older than Aliyeh. How old is Aliyeh's sister?
workedSolution
sm_nogap One strategy:
| | | | --------------------- | -------------- | | 22 + 29| = 20 + 2 + 20 + 9| || = 40 + 11| | | \= {{{correctAnswer}}} |
correctAnswer
51

Answers

Is Correct?Answer
x

41

x

47

✓

51

x

57

Tags

  • staging_suejones