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Standard Form: Adding/Subtracting

Quiz by DoodleMaths

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20 questions
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  • Q1
    To do 3 × 10³ + 2 × 10⁴, we work out 3000 + 20000 before converting back to standard form.
    true
    false
    True or False
    30s
  • Q2
    3 × 10³ + 2 × 10⁴ = 3000 + 20000 = 23000 =
    23 × 10³
    2.3 × 10⁴
    5 × 10⁴
    0.23 × 10³
    30s
  • Q3
    5.2 × 10³ - 1.1 × 10³ = 5200 - 1100 =
    4.1 × 10²
    4.1 × 10³
    41 × 10²
    6.3 × 10³
    30s
  • Q4
    4.8 × 10³ + 1.3 × 10² = (remember, you can convert to ordinary form to help)
    6.1 × 10⁴
    4.93 × 10⁵
    4.93 × 10³
    6.1 × 10³
    30s
  • Q5
    6.5 × 10⁴ + 3 × 10³ = 6.8 × 10⁴
    true
    false
    True or False
    30s
  • Q6
    6.5 × 10⁴ - 3 × 10³ =
    6.8 × 10⁴
    3.5 × 10⁴
    3.5 × 10³
    6.2 × 10⁴
    30s
  • Q7
    4.54 × 10³ - 3.1 × 10² =
    4.33 × 10³
    4.23 × 10³
    1.44 × 10³
    4.23 × 10⁵
    30s
  • Q8
    7.51 × 10⁴ + 1.8 × 10³ =
    7.79 × 10⁴
    7.69 × 10⁵
    8.59 × 10⁴
    7.69 × 10⁴
    30s
  • Q9
    1.5 × 10⁵ + 1.5 × 10⁴ = 1.65 × 10⁵
    true
    false
    True or False
    30s
  • Q10
    7.9 × 10⁴ - 3.0 × 10³ =
    4.9 × 10¹
    7.6 × 10¹
    4.9 × 10⁴
    7.6 × 10⁴
    30s
  • Q11
    7 × 10³ + 2 × 10⁴ = _000 + 20000 (fill in the missing digit)
    Users enter free text
    Type an Answer
    30s
  • Q12
    6 × 10³ + 3 × 10⁴ = 6000 + 30000 = 36000 =
    0.36 × 10⁵
    3.6 × 10⁴
    36 × 10³
    3.06 × 10⁴
    30s
  • Q13
    4.7 × 10³ - 1.2 × 10³ = 4700 - 1200 =
    3.5 × 10³
    35 × 10²
    59 × 10²
    5.9 × 10³
    30s
  • Q14
    6.8 × 10³ + 2.3 × 10² = (remember you can convert to ordinary form to help)
    7.03 × 10³
    6.93 × 10³
    6.1 × 10⁴
    73 × 10²
    30s
  • Q15
    8.5 × 10⁴ + 3 × 10³ = 6.8 × 10⁴
    false
    true
    True or False
    30s

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