? Matching Measurements: mm to cm Activity Sheet - Twinkl - Free Printable

The task in the image is a "Matching Measurements: mm to cm" activity. The goal is to match equivalent measurements between millimeters (mm) and centimeters (cm).

We know that:
> 1 cm = 10 mm

So, to convert mm to cm, we divide by 10:
> $ \text{cm} = \frac{\text{mm}}{10} $

Let’s go through each measurement on the left and find its equivalent in centimeters.

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Left Side (mm values):

1. 2000 mm
$ 2000 ÷ 10 = 200 $ cm → Not listed directly, but let's check the right side.

2. 328 mm
$ 328 ÷ 10 = 32.8 $ cm → Not matching any directly? Wait — look at the right side.

Wait — the right side has:
- 10 cm
- 1 cm
- 8.5 cm
- 42.5 cm
- 32.8 cm
- 11.6 cm
- 19.6 cm

So we need to match the mm values on the left with the cm values on the right.

Let’s convert each mm value:

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Converting each mm to cm:

1. 2000 mm
$ 2000 ÷ 10 = 200 $ cm → But 200 cm is not on the right. Wait — maybe there’s a mistake?

But wait — looking again, the right side has:
- 10 cm
- 1 cm
- 8.5 cm
- 42.5 cm
- 32.8 cm
- 11.6 cm
- 19.6 cm

And the left side has:
- 2000 mm
- 328 mm
- 100 mm
- 196 mm
- 19 cm → Wait! That's already in cm.
- 427 mm
- 116 mm

Wait — actually, some of the left items are in cm, like "19 cm", "11.6 cm", etc. So this seems to be a mix.

Let me re-express the full list clearly.

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Left Column (measurements):

1. 2000 mm
2. 328 mm
3. 100 mm
4. 196 mm
5. 19 cm
6. 427 mm
7. 116 mm

Right Column (measurements):

1. 10 cm
2. 1 cm
3. 8.5 cm
4. 42.5 cm
5. 32.8 cm
6. 11.6 cm
7. 19.6 cm

Now, we need to match equal values across both columns.

Let’s convert all mm to cm:

- 2000 mm = 200 cm → not on the right
- 328 mm = 32.8 cm → matches 32.8 cm
- 100 mm = 10 cm → matches 10 cm
- 196 mm = 19.6 cm → matches 19.6 cm
- 427 mm = 42.7 cm → close to 42.5 cm? No, not exact.
- 116 mm = 11.6 cm → matches 11.6 cm

Now check the cm values on the left:

- 19 cm → not on the right
- 11.6 cm → already matched above (from 116 mm)
- 8.5 cm → not on the left
- 1 cm → not on the left

Wait — perhaps the left column has mixed units, and we need to match the equal values regardless of unit.

Let’s list all values and their equivalents:

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Step-by-step Matching:

#### Convert mm to cm:
- 2000 mm = 200 cm → no match on right
- 328 mm = 32.8 cm → matches 32.8 cm ✔
- 100 mm = 10 cm → matches 10 cm ✔
- 196 mm = 19.6 cm → matches 19.6 cm ✔
- 427 mm = 42.7 cm → no match (closest is 42.5 cm, but not equal)
- 116 mm = 11.6 cm → matches 11.6 cm ✔

Now check if any cm values on the left match right-side mm values?

Wait — the left column includes:
- 19 cm
- 11.6 cm
- 8.5 cm
- 1 cm

These are already in cm, so we need to see if they match anything on the right.

Right side has:
- 10 cm
- 1 cm
- 8.5 cm
- 42.5 cm
- 32.8 cm
- 11.6 cm
- 19.6 cm

So:

- 19 cm → not on right
- 11.6 cm → appears on right ✔
- 8.5 cm → appears on right ✔
- 1 cm → appears on right ✔

But 11.6 cm also comes from 116 mm → so it might be a duplicate.

Wait — perhaps the matching is between the two lists, and some values appear in both.

Let’s assume the left column contains a mix of mm and cm values, and the right column has only cm values.

So we need to convert mm to cm and match.

Let’s list all possible matches:

| Left Value | Converted to cm | Match on Right? |
|------------|------------------|------------------|
| 2000 mm | 200 cm | ✘ No |
| 328 mm | 32.8 cm | ✔ Yes (32.8 cm) |
| 100 mm | 10 cm | ✔ Yes (10 cm) |
| 196 mm | 19.6 cm | ✔ Yes (19.6 cm) |
| 19 cm | 19 cm | ✘ No (no 19 cm) |
| 427 mm | 42.7 cm | ✘ No (close to 42.5 cm, but not equal) |
| 116 mm | 11.6 cm | ✔ Yes (11.6 cm) |

Now, check the cm values on the left:
- 19 cm → not on right
- 11.6 cm → yes, on right
- 8.5 cm → yes, on right
- 1 cm → yes, on right

But where do these come from?

Ah! Perhaps the left column has both mm and cm values, and we must match them to the cm values on the right.

So the correct matches are:

1. 328 mm = 32.8 cm → match
2. 100 mm = 10 cm → match
3. 196 mm = 19.6 cm → match
4. 116 mm = 11.6 cm → match
5. 1 cm = 1 cm → match
6. 8.5 cm = 8.5 cm → match
7. 427 mm = 42.7 cm → but right has 42.5 cm, not 42.7 → no match
8. 19 cm = 19 cm → not on right
9. 2000 mm = 200 cm → not on right

Wait — this suggests only partial matches.

But let’s look back at the image.

In the first image (left), the layout is:

Left column (boxed):
- 2000mm
- 328mm
- 100mm
- 196mm
- 19cm
- 427mm
- 116mm

Right column:
- 10cm
- 1cm
- 8.5cm
- 42.5cm
- 32.8cm
- 11.6cm
- 19.6cm

Now, let’s try to match each one:

Final Matching:

1. 2000 mm → 200 cm → not on right → ✘
2. 328 mm → 32.8 cm → matches 32.8 cm ✔
3. 100 mm → 10 cm → matches 10 cm ✔
4. 196 mm → 19.6 cm → matches 19.6 cm ✔
5. 19 cm → 19 cm → not on right → ✘
6. 427 mm → 42.7 cm → not on right (only 42.5 cm) → ✘
7. 116 mm → 11.6 cm → matches 11.6 cm ✔

Now, what about the other cm values on the right?

- 1 cm → is it matched? Only if there's 10 mm on left → but left has 100 mm, not 10 mm
- 8.5 cm → is it matched? Only if 85 mm → not on left
- 42.5 cm → 425 mm → not on left

So only four clear matches:

- 328 mm ↔ 32.8 cm
- 100 mm ↔ 10 cm
- 196 mm ↔ 19.6 cm
- 116 mm ↔ 11.6 cm

But wait — what about 19 cm? It's on the left, but not on the right.

Similarly, 1 cm is on the right, but not on the left.

But perhaps there's a typo or misprint.

Wait — maybe 19 cm should be 190 mm? Or 19.6 cm is meant to be matched with 196 mm — which we have.

Alternatively, perhaps 427 mm is supposed to be 425 mm to match 42.5 cm?

Or 19 cm is a typo for 190 mm?

But let's consider the possibility that the left column includes some cm values that are to be matched directly.

For example:

- 19 cm → should match 19 cm on right? But it's not there.
- 11.6 cm → is on left and right → so match?
- 8.5 cm → on right, but not on left
- 1 cm → on right, but not on left

Wait — the left column has:
- 2000 mm
- 328 mm
- 100 mm
- 196 mm
- 19 cm
- 427 mm
- 116 mm

And the right column has:
- 10 cm
- 1 cm
- 8.5 cm
- 42.5 cm
- 32.8 cm
- 11.6 cm
- 19.6 cm

So the only direct matches are:

- 328 mm ↔ 32.8 cm
- 100 mm ↔ 10 cm
- 196 mm ↔ 19.6 cm
- 116 mm ↔ 11.6 cm

That’s four.

But what about 19 cm? Is it supposed to match 190 mm? But 190 mm isn't on the list.

Perhaps 19 cm is a typo and should be 190 mm? Or vice versa.

Alternatively, maybe 19 cm is meant to be matched with 190 mm, but that's not on the list.

Another idea: perhaps 19 cm is 190 mm, and 19.6 cm is 196 mm — which we already have.

But 19 cm ≠ 196 mm, since 19 cm = 190 mm.

So 19 cm = 190 mm, not 196 mm.

Similarly, 196 mm = 19.6 cm, correct.

So 19 cm and 196 mm are different.

Therefore, 19 cm does not match 19.6 cm.

So only valid matches are:

1. 328 mm = 32.8 cm
2. 100 mm = 10 cm
3. 196 mm = 19.6 cm
4. 116 mm = 11.6 cm

What about 427 mm? 427 mm = 42.7 cm, but right has 42.5 cm, so no.

Unless it's a typo.

Similarly, 2000 mm = 200 cm, not on right.

1 cm on right — would require 10 mm on left — not present.

8.5 cm — requires 85 mm — not present.

So only four matches.

But the worksheet has seven boxes on each side — probably intended for seven matches.

So likely, 19 cm is meant to be 190 mm, but it's written as 19 cm.

Alternatively, 19 cm should match 190 mm, but it's not listed.

Wait — unless 19 cm is meant to be matched with 190 mm, but it's not on the list.

Perhaps the 19 cm is a mistake, and should be 190 mm.

But let's double-check the original image.

Looking at the left image, under "19cm", the right side has "19.6cm" — so not matching.

Wait — perhaps 19 cm is not meant to be matched, or it's a red herring.

Alternatively, maybe 19 cm is meant to be 190 mm, and 196 mm is 19.6 cm, so they are different.

So only four correct matches.

But let’s check if 427 mm could be 425 mm? Then 425 mm = 42.5 cm — which is on the right.

So perhaps 427 mm is a typo for 425 mm.

Similarly, 19 cm might be a typo for 190 mm.

But based on the given numbers, here are the correct matches:

✔ Correct Matches:

1. 328 mm = 32.8 cm
2. 100 mm = 10 cm
3. 196 mm = 19.6 cm
4. 116 mm = 11.6 cm

These are the only ones that are numerically equal.

Other values do not match.

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Final Answer:

The correct matches are:

- 328 mm ↔ 32.8 cm
- 100 mm ↔ 10 cm
- 196 mm ↔ 19.6 cm
- 116 mm ↔ 11.6 cm

The other values (2000 mm, 19 cm, 427 mm, 1 cm, 8.5 cm, 42.5 cm) do not have exact matches in the opposite column.

However, if the intention was to include all, then likely there are typos in the worksheet.

But based on accurate conversion:

> Answer:
> - 328 mm = 32.8 cm
> - 100 mm = 10 cm
> - 196 mm = 19.6 cm
> - 116 mm = 11.6 cm

These are the only correct matches.