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High 9
Arithmetic

STANDARD FORM Year9Sci1 SMSAB

Nurul Hafizah
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Question 1

Multiple Choice

Which of the following numbers is written in standard form?

  • 32000
  • 3.2 × 10^4
  • 0.032
  • 3200 × 10^2

Question 2

Multiple Choice

Which is the standard form of 0.0073?

  • 7.3 × 10^-3
  • 73 × 10^-4
  • 0.73 × 10^-2
  • 730 × 10^-5

Question 3

Multiple Choice

Convert 500,000 to standard form.

  • 5 × 10^3
  • 5 × 10^4
  • 5 × 10^5
  • 50 × 10^4

Question 4

Multiple Choice

What is 9.1 × 10^2 in ordinary number form?

  • 910
  • 91
  • 9.1
  • 9100

Question 5

Multiple Choice

Which of these numbers is NOT written in standard form?

  • 2.6 × 10^5
  • 0.89 × 10^7
  • 6.0 × 10^2
  • 7.5 × 10^-3

Question 6

Multiple Choice

Write 120,000,000 in standard form.

  • 1.2 × 10^6
  • 12 × 10^7
  • 1.2 × 10^8
  • 12 × 10^6

Question 7

Multiple Choice

Which is the standard form of 820,000?

  • 8.2 × 10^4
  • 8.2 × 10^5
  • 8.2 × 10^6
  • 0.82 × 10^6

Question 8

Multiple Choice

If a number is written as 4.5 × 10^-3, what is its value in ordinary decimal notation?

  • 0.0045
  • 0.045
  • 0.00045
  • 0.45

Question 9

Multiple Choice

Which number is the same as 6.02 × 10^2?

  • 0.602
  • 602
  • 60.2
  • 6,020

Question 10

Multiple Choice

Why do scientists use standard form to write very large or small numbers?

  • To make numbers look more complicated
  • Because calculators only accept standard form
  • Because it makes big and small numbers easier to read, write, and compare
  • So only scientists can understand numbers

Question 11

Multiple Choice

What is (6.2 × 10^3) + (4.8 × 10^2) in standard form?

  • 6.68 × 10^3
  • 6.7 × 10^3
  • 6.68 × 10^2
  • 10.0 × 10^3

Question 12

Multiple Choice

What is the result of (1.0 × 10^5) - (7.5 × 10^4)?

  • 2.5 × 10^4
  • 2.5 × 10^5
  • 1.75 × 10^5
  • 0.25 × 10^5

Question 13

Multiple Choice

Which equation correctly represents (4.7 × 10^2) + (2.3 × 10^2)?

  • 7.0 × 10^2
  • 7.0 × 10^4
  • 2.4 × 10^2
  • 7.0 × 10^1

Question 14

Multiple Choice

Find (5.2 × 10^6) - (4.2 × 10^5) in standard form.

  • 4.78 × 10^6
  • 0.1 × 10^6
  • 1.0 × 10^6
  • 5.7 × 10^6
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