Converting to a smaller unit
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. How do you convert 3 GiB into MiB?
2. Which operation converts MiB to KiB?
3. Which answer is correct for 5 KiB converted to bytes?
4. A student converts 2 MiB to KiB and gets 2048. Is the answer sensible?
5. A student converts 4 GiB to MiB and gets 0.0039. What should you tell them?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1gib * 1024 | AConverts a size in GiB into MiB by multiplying by 1024 | |
| 2kib * 1024 | BMultiplied by 1000 instead of 1024. The correct answer is 5 * 1024 = 5120 bytes. | |
| 3To change 3 MiB into KiB (a smaller unit), multiply by 1024 | C3 * 1024 = 3072 | |
| 4After converting to a smaller unit the answer should be a bigger number than the start, so check this | D2 GiB = 2048 MiB, and 2048 > 2 | |
| 54 GiB = 4 / 1024 = 0.0039 MiB | EConverts a size in KiB into bytes by multiplying by 1024 | |
| 65 KiB = 5 * 1000 = 5000 bytes | FDivided by 1024 instead of multiplying. Going to a smaller unit needs multiplying, so the answer should be 4 * 1024 = 4096 MiB. |
C
Definitions
size * 1024
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
gib = 2
mib = gib _ 1024
2.
mib = 5
kib = mib * ____
3.
kib = 4
bytes = ___ * 1024
4.
gib = 2
mib = gib * 1024
print(mib _ gib)
5.
mib = 3
kib = mib * 1024
print(___)
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
gib <- 2
B
mib <- gib * 1024
C
OUTPUT mib
D
kib <- mib / 1024
E
OUTPUT kib
Question 2
A
mib <- 5
B
OUTPUT mib
C
kib <- mib * 1000
D
OUTPUT kib
Question 3
A
mib <- 3 / 1024
B
OUTPUT mib
C
// 3 GiB converted to MiB
Question 4
A
kib <- 6
B
bytes <- kib * 8
C
OUTPUT bytes
Question 5
A
gib <- 2
B
mib <- gib * 1024
C
kib <- gib * 1024
D
OUTPUT kib
Answer Key
Converting to a smaller unit
Section A: Quick Questions
Q1
A — 3 x 1024 = 3072 MiB
Q2
A — Multiply by 1024
Q3
B — 5120 bytes
Q4
B — Yes, it is bigger than 2, as expected for a smaller unit
Q5
A — Wrong: the answer should be bigger than 4, so multiply by 1024
Section B: Match the Pairs
Q1
gib * 1024 → Converts a size in GiB into MiB by multiplying by 1024
Q2
kib * 1024 → Converts a size in KiB into bytes by multiplying by 1024
Q3
To change 3 MiB into KiB (a smaller unit), multiply by 1024 → 3 * 1024 = 3072
Q4
After converting to a smaller unit the answer should be a bigger number than the start, so check this → 2 GiB = 2048 MiB, and 2048 > 2
Q5
4 GiB = 4 / 1024 = 0.0039 MiB → Divided by 1024 instead of multiplying. Going to a smaller unit needs multiplying, so the answer should be 4 * 1024 = 4096 MiB.
Q6
5 KiB = 5 * 1000 = 5000 bytes → Multiplied by 1000 instead of 1024. The correct answer is 5 * 1024 = 5120 bytes.
Section C: Definitions
Q1
size * 1024 — To convert to the next smaller unit (GiB to MiB, MiB to KiB, KiB to bytes), multiply by 1024. The answer should be a bigger number than the one you started with.Section D: Fill in the Blanks
Q1
gib = 2
mib = gib * 1024Q2
mib = 5
kib = mib * 1024Q3
kib = 4
bytes = kib * 1024Q4
gib = 2
mib = gib * 1024
print(mib > gib)Q5
mib = 3
kib = mib * 1024
print(kib)Section E: Spot the Error
Q1
D — Going from MiB to the smaller unit KiB means multiplying by 1024, not dividing. It should be kib <- mib * 1024, so the answer is a bigger number.
Q2
C — Storage units step by 1024, not 1000. MiB to KiB must be kib <- mib * 1024.
Q3
A — Converting 3 GiB to the smaller unit MiB needs multiplication: mib <- 3 * 1024. Dividing would give a tiny number instead of a bigger one.
Q4
B — 8 is the number of bits in a byte, not the step between KiB and bytes. One KiB is 1024 bytes, so it should be bytes <- kib * 1024.
Q5
C — This skips a step. GiB must first become MiB, then MiB becomes KiB. The line should be kib <- mib * 1024.