Sure! Let’s solve each problem step by step. The worksheet is titled “Adding and Subtracting Metric Lengths,” so we need to add or subtract the given lengths, making sure units are consistent (cm or mm). If units differ, convert them first.
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Important Note:
1 cm = 10 mm
So if you see mixed units (e.g., cm and mm), convert everything to the same unit before adding/subtracting. You can convert mm to cm by dividing by 10, or cm to mm by multiplying by 10.
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Let’s go one by one:
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1) 3.6 cm + 1.8 cm
→ Both in cm → 3.6 + 1.8 =
5.4 cm
✔ Answer: 5.4 cm
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2) 2.3 cm + 1.9 cm
→ 2.3 + 1.9 =
4.2 cm
✔ Answer: 4.2 cm
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3) 3.4 cm + 2.8 cm
→ 3.4 + 2.8 =
6.2 cm
✔ Answer: 6.2 cm
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4) 5.7 cm + 4.9 cm
→ 5.7 + 4.9 =
10.6 cm
✔ Answer: 10.6 cm
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5) 3.2 cm + 2.9 cm
→ 3.2 + 2.9 =
6.1 cm
✔ Answer: 6.1 cm
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6) 4.1 cm - 3.5 cm
→ 4.1 - 3.5 =
0.6 cm
✔ Answer: 0.6 cm
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7) 3.2 cm - 1.4 cm
→ 3.2 - 1.4 =
1.8 cm
✔ Answer: 1.8 cm
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8) 3.6 cm - 2.7 cm
→ 3.6 - 2.7 =
0.9 cm
✔ Answer: 0.9 cm
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9) 5.2 cm - 2.7 cm
→ 5.2 - 2.7 =
2.5 cm
✔ Answer: 2.5 cm
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10) 5.1 cm - 3.2 cm
→ 5.1 - 3.2 =
1.9 cm
✔ Answer: 1.9 cm
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11) 5.4 cm - 2.7 cm
→ 5.4 - 2.7 =
2.7 cm
✔ Answer: 2.7 cm
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12) 4.5 cm + 28 mm
→ Convert 28 mm to cm: 28 ÷ 10 =
2.8 cm
→ 4.5 + 2.8 =
7.3 cm
✔ Answer: 7.3 cm
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13) 3.8 cm + 29 mm
→ 29 mm = 2.9 cm
→ 3.8 + 2.9 =
6.7 cm
✔ Answer: 6.7 cm
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14) 48 mm + 1.9 cm
→ 1.9 cm = 19 mm
→ 48 + 19 =
67 mm
*(You could also write as 6.7 cm — but since original had mm first, 67 mm is fine)*
✔ Answer: 67 mm *(or 6.7 cm — both correct, but 67 mm matches input unit order)*
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15) 3.3 cm + 14 mm
→ 14 mm = 1.4 cm
→ 3.3 + 1.4 =
4.7 cm
✔ Answer: 4.7 cm
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16) 57 mm + 1.9 cm
→ 1.9 cm = 19 mm
→ 57 + 19 =
76 mm
✔ Answer: 76 mm
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17) 57 mm + 3.9 cm
→ 3.9 cm = 39 mm
→ 57 + 39 =
96 mm
✔ Answer: 96 mm
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18) 4.1 cm - 16 mm
→ 16 mm = 1.6 cm
→ 4.1 - 1.6 =
2.5 cm
✔ Answer: 2.5 cm
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19) 38 mm - 2.9 cm
→ 2.9 cm = 29 mm
→ 38 - 29 =
9 mm
✔ Answer: 9 mm
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20) 53 mm - 4.9 cm
→ 4.9 cm = 49 mm
→ 53 - 49 =
4 mm
✔ Answer: 4 mm
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✔ Final Answers List:
1.
5.4 cm
2.
4.2 cm
3.
6.2 cm
4.
10.6 cm
5.
6.1 cm
6.
0.6 cm
7.
1.8 cm
8.
0.9 cm
9.
2.5 cm
10.
1.9 cm
11.
2.7 cm
12.
7.3 cm
13.
6.7 cm
14.
67 mm
15.
4.7 cm
16.
76 mm
17.
96 mm
18.
2.5 cm
19.
9 mm
20.
4 mm
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💡 Tips for Students:
- Always check if units match.
- Convert mm to cm (÷10) or cm to mm (×10) as needed.
- Line up decimals when adding/subtracting decimal numbers.
- Double-check your arithmetic!
Let me know if you want this formatted as a printable answer key!
Parent Tip: Review the logic above to help your child master the concept of measurement conversion worksheet grade 5.
