Let’s solve each problem one by one, step by step.
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Problem 1:
Jane has 63 m of ribbon. She cuts off 56 m 21 cm. How much is left?
First, we need to subtract the length she cut from the original length.
But note: 63 m is the same as
62 m 100 cm (because 1 meter = 100 centimeters).
Now subtract:
62 m 100 cm
–56 m 21 cm
= ?
Subtract meters: 62 – 56 = 6 m
Subtract centimeters: 100 – 21 = 79 cm
So, leftover ribbon =
6 m 79 cm
✔ Check: 56 m 21 cm + 6 m 79 cm = 62 m 100 cm = 63 m → Correct!
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Problem 2:
John poured 350 ml into each of 8 glasses, and had 200 ml left in the jar. What was the total capacity of the jar in liters?
First, find how much juice he poured out:
350 ml × 8 = ?
350 × 8 = 2800 ml
He also had 200 ml left.
So total juice in jar = 2800 ml + 200 ml =
3000 ml
Now convert to liters: 1000 ml = 1 liter → 3000 ml =
3 liters
✔ Check: 8 glasses × 350 ml = 2800 ml; plus 200 ml left = 3000 ml = 3 L → Correct!
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Problem 3:
A box of frozen vegetables weighs 144 kg 780 g. There are 15 packets inside, all equal weight. What is the weight of each packet?
We need to divide the total weight by 15.
First, convert everything to grams to make division easier.
144 kg = 144 × 1000 = 144,000 g
Plus 780 g → Total = 144,000 + 780 =
144,780 g
Now divide by 15:
144,780 ÷ 15
Let’s do it step by step:
15 × 9000 = 135,000
144,780 – 135,000 = 9,780
15 × 600 = 9,000
9,780 – 9,000 = 780
15 × 52 = 780
So total = 9000 + 600 + 52 =
9652 g per packet
Convert back to kg and g:
9652 g = 9000 g + 652 g =
9 kg 652 g
✔ Check: 9652 g × 15 = ?
9652 × 10 = 96,520
9652 × 5 = 48,260
Total = 96,520 + 48,260 = 144,780 g → which is 144 kg 780 g → Correct!
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Final Answer:
1. 6 m 79 cm
2. 3 liters
3. 9 kg 652 g
Parent Tip: Review the logic above to help your child master the concept of metric conversion word problems worksheet.