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Grade 9 Variables & Data Types Worksheet with Answers

Grade 9 (US) · Year 10 (UK) · Class 9 (India) · Computer Science

Unit 2: Programming FundamentalsData Types

Recognising integers, floats, strings and Booleans, and how operators behave on each. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

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Variables & Data Types

Grade 9 · Computer Science

Score___ / 12

Name

Class

Date

Learning goal: Data Types

Directions: Read each question and circle the best answer.

Example

What data type is the value 887: integer, float, string, or Boolean?

Answer: integer

RememberData types

integerwhole number42floatdecimal number3.5stringtext in quotes"hello"BooleanTrue or False
  1. 1

    What data type is the value 65.6: integer, float, string, or Boolean?

    IntegerFloatStringBoolean
  2. 2

    What data type is the value 23.3: integer, float, string, or Boolean?

    IntegerFloatStringBoolean
  3. 3

    What data type is the value 14.9: integer, float, string, or Boolean?

    IntegerFloatStringBoolean
  4. 4

    What data type is the value "3.5": integer, float, string, or Boolean?

    IntegerFloatStringBoolean
  5. 5

    What data type is the value 465: integer, float, string, or Boolean?

    IntegerFloatStringBoolean
  6. 6

    What data type is the value 54: integer, float, string, or Boolean?

    IntegerFloatStringBoolean
  7. 7

    What data type is the value 55.5: integer, float, string, or Boolean?

    IntegerFloatStringBoolean
  8. 8

    What data type is the value "42": integer, float, string, or Boolean?

    IntegerFloatStringBoolean
  9. 9

    What data type is the value 432: integer, float, string, or Boolean?

    IntegerFloatStringBoolean
  10. 10

    What data type is the value 64.7: integer, float, string, or Boolean?

    IntegerFloatStringBoolean
  11. 11

    What data type is the value 14.6: integer, float, string, or Boolean?

    IntegerFloatStringBoolean
  12. 12

    What data type is the value False: integer, float, string, or Boolean?

    IntegerFloatStringBoolean

★ Challenge corner for fast finishers

What is the largest whole number you can store in 10 bits?

51212561128164132116181412111

How did I do?

Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/computer/9/data_types

Answer key (click to show)
  1. 1.float
  2. 2.float
  3. 3.float
  4. 4.string
  5. 5.integer
  6. 6.integer
  7. 7.float
  8. 8.string
  9. 9.integer
  10. 10.float
  11. 11.float
  12. 12.Boolean
  13. ★1023 (challenge corner)

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