Int, Long, Float, Double number types in Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare an integer variable named age with value 30.

Kotlin

val age: Int = [1]

Drag options to blanks, or click blank then click option'

A30.0

B30L

C30.0f

D30

Attempts:

3 left

💡 Hint

Common Mistakes

Using 30L which is a Long type suffix.

Using 30.0f or 30.0 which are floating point numbers.

The Int type holds whole numbers without decimals. So 30 is correct.

2fill in blank

medium

Complete the code to declare a Long variable named distance with value 10000000000.

Kotlin

val distance: Long = [1]

Drag options to blanks, or click blank then click option'

A10000000000

B10000000000L

C10000000000f

D10000000000.0

Attempts:

3 left

💡 Hint

Common Mistakes

Not adding L suffix causes errors or wrong type.

Using floating point suffixes like f or decimals.

The Long type holds large whole numbers. Adding L suffix tells Kotlin it's a Long.

3fill in blank

hard

Fix the error in the code by choosing the correct value for a Float variable temperature.

Kotlin

val temperature: Float = [1]

Drag options to blanks, or click blank then click option'

A36.6f

B36.6

C36

D36L

Attempts:

3 left

💡 Hint

Common Mistakes

Using a decimal without f suffix causes type mismatch.

Using integer or Long values for Float variables.

Float values require the f suffix in Kotlin to distinguish from Double.

4fill in blank

hard

Fill both blanks to create a Double variable price with value 19.99 and print it.

Kotlin

val price: [1] = 19.99
println([2])

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ADouble

Bprice

CFloat

Dcost

Attempts:

3 left

💡 Hint

Common Mistakes

Using Float instead of Double for decimal literals without suffix.

Printing a variable name that was not declared.

price is declared as Double type and printed by its name price.

5fill in blank

hard

Fill all three blanks to create a map of numbers with their types as strings, filtering only those with value greater than 10.

Kotlin

val numbers = mapOf(
  [1] to "Int",
  [2] to "Long",
  [3] to "Float"
).filter { it.key > 10 }

Drag options to blanks, or click blank then click option'

A15

B20L

C12.5f

D8

Attempts:

3 left

💡 Hint

Common Mistakes

Using suffixes incorrectly or mixing types.

Including numbers less than or equal to 10 which get filtered out.

We use 15 as Int, 20L as Long, and 12.5f as Float. The filter keeps only keys greater than 10.