Algebra, NAPX-G4-NC27, NAPX-G3-NC28

Question

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Worked Solution

{{{workedSolution}}}

Variant 0

DifficultyLevel

685

Question

Which value of ? is closest to the missing number in this equation?

( ? + 39.3) ÷ 4.15 = 69.3

Worked Solution
( ? + 39.3) ÷ 4.15 = 69.3
( ? + 39.3) = 69.3 × 4.15
? ≈(70×4) − 40≈(70×4)\ −\ 40
≈280 − 40≈280\ −\ 40
≈ 240

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Which value of ? is closest to the missing number in this equation? ( ? + 39.3) ÷ 4.15 = 69.3
workedSolution
| | | | ------------: | ---------- | | ( ? + 39.3) ÷ 4.15 | \= 69.3 | | | | | | | | ( ? + 39.3) | \= 69.3 × 4.15 | | | | | | | | ? | $≈(70×4)\ −\ 40$ | | | $≈280\ −\ 40$ | | | ≈ {{{correctAnswer}}} |
correctAnswer
240

Answers

Is Correct?Answer
x

−20- 20

x

60

x

160

✓

240

x

320

Variant 1

DifficultyLevel

686

Question

Which value of ? is closest to the missing number in this equation?

( ? + 25.4) ÷ 3.9 = 48.2

Worked Solution
( ? + 25.4) ÷ 3.9 = 48.2
( ? + 25.4) = 48.2 × 3.9
? ≈\approx (50 × 4) − 25
≈\approx 200 − 25
≈\approx 175

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Which value of ? is closest to the missing number in this equation? ( ? + 25.4) ÷ 3.9 = 48.2
workedSolution
| | | | -------------------------------: | ----------------- | | ( ? + 25.4) ÷ 3.9| \= 48.2 | | | | | ( ? + 25.4) | \= 48.2 × 3.9 | | | | | ? | $\approx$ (50 × 4) − 25 | | | $\approx$ 200 − 25 | | | $\approx$ {{{correctAnswer}}} |
correctAnswer
175

Answers

Is Correct?Answer
x

80

x

120

✓

175

x

240

x

320

Variant 2

DifficultyLevel

687

Question

Which value of ? is closest to the missing number in this equation?

( ? − 21.4) × 5.1 = 78.6

Worked Solution
( ? − 21.4) × 5.1 = 78.6
( ? − 21.4) = 78.6 ÷ 5.1
? ≈\approx (80 ÷ 5) + 21
≈\approx 16 + 21
≈\approx 37

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Which value of ? is closest to the missing number in this equation? ( ? − 21.4) × 5.1 = 78.6
workedSolution
| | | | ------------------------: | ------------------------- | | ( ? − 21.4) × 5.1 | \= 78.6 | | | | | ( ? − 21.4) | \= 78.6 ÷ 5.1 | | | | | ? | $\approx$ (80 ÷ 5) + 21 | | | $\approx$ 16 + 21 | | | $\approx$ {{{correctAnswer}}} |
correctAnswer
37

Answers

Is Correct?Answer
x

5

x

10

x

21

✓

37

x

55

Variant 3

DifficultyLevel

688

Question

Which value of ? is closest to the missing number in this equation?

( ? + 31.6) ÷ 4.2 = 28.4

Worked Solution
( ? + 31.6) ÷ 4.2 = 28.4
( ? + 31.6) = 28.4 × 4.2
? ≈\approx (28 × 4) − 32
≈\approx 112 − 32
≈\approx 80

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Which value of ? is closest to the missing number in this equation? ( ? + 31.6) ÷ 4.2 = 28.4
workedSolution
| | | | -----------------: | ------------------------- | | ( ? + 31.6) ÷ 4.2 | \= 28.4 | | | | | ( ? + 31.6) | \= 28.4 × 4.2 | | | | | ? | $\approx$ (28 × 4) − 32 | | | $\approx$ 112 − 32 | | | $\approx$ {{{correctAnswer}}} |
correctAnswer
80

Answers

Is Correct?Answer
x

40

x

60

✓

80

x

120

x

160

Variant 4

DifficultyLevel

689

Question

Which value of ? is closest to the missing number in this equation?

( ? − 42.3) × 3.1 = 121.8

Worked Solution
( ? − 42.3) × 3.1 = 121.8
( ? − 42.3) = 121.8 ÷ 3.1
? ≈\approx (120 ÷ 3) + 42
≈\approx 40 + 42
≈\approx 82

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Which value of ? is closest to the missing number in this equation? ( ? − 42.3) × 3.1 = 121.8
workedSolution
| | | | --------: | ------------------------- | | ( ? − 42.3) × 3.1 | \= 121.8 | | | | | ( ? − 42.3) | \= 121.8 ÷ 3.1| | | | | ? | $\approx$ (120 ÷ 3) + 42 | | | $\approx$ 40 + 42 | | | $\approx$ {{{correctAnswer}}} |
correctAnswer
82

Answers

Is Correct?Answer
x

5

x

20

x

35

x

50

✓

82

Variant 5

DifficultyLevel

689

Question

Which value of ? is closest to the missing number in this equation?

( ? + 48.7) ÷ 7.2 = 19.4

Worked Solution
( ? + 48.7) ÷ 7.2 = 19.4
( ? + 48.7) = 19.4 × 7.2
? ≈\approx (20 × 7) − 49
≈\approx 140 − 49
≈\approx 91

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Which value of ? is closest to the missing number in this equation? ( ? + 48.7) ÷ 7.2 = 19.4
workedSolution
| | | | -------------------------: | ------------------------- | | ( ? + 48.7) ÷ 7.2 | \= 19.4 | | | | | ( ? + 48.7) | \= 19.4 × 7.2 | | | | | ? | $\approx$ (20 × 7) − 49 | | | $\approx$ 140 − 49 | | | $\approx$ {{{correctAnswer}}} |
correctAnswer
91

Answers

Is Correct?Answer
x

20

x

60

✓

91

x

130

x

170

Tags

  • nap_nc
  • staging_suejones