Let's solve each word problem step by step and explain the solution.
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Problem 1:
A car company was trying to reduce the weight of their new electric car. The original weight was 800 kg. At first, they reduced the weight by 91 kg. Then, they reduced it by 84 kg and another 49 kg. How much does their car weigh now?
Step-by-step:
- Original weight = 800 kg
- First reduction = 91 kg
- Second reduction = 84 kg
- Third reduction = 49 kg
Total reduction = 91 + 84 + 49
= 224 kg
Final weight = 800 - 224 =
576 kg
✔ Answer: 576 kg
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Problem 2:
Michael lost weight over 5 months. He weighed 141 kg in the beginning. He lost 19 kg the first month, 9 kg the second, 13 kg the third, 21 kg the fourth and 15 kg the fifth month. How much does he weigh now?
Step-by-step:
- Starting weight = 141 kg
- Total weight lost = 19 + 9 + 13 + 21 + 15
= 77 kg
Current weight = 141 - 77 =
64 kg
✔ Answer: 64 kg
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Problem 3:
Kelly reduced her working hours to spend more time with her family. She used to work 185 hours a month. If she works 112 hours less than she previously did, how many hours a month does she work now?
Step-by-step:
- Previous hours = 185
- Reduction = 112 hours
Current hours = 185 - 112 =
73 hours
✔ Answer: 73 hours
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Problem 4:
Jesse made $992 in April. He only made $365 in May. How much less did he earn in May?
Step-by-step:
- April earnings = $992
- May earnings = $365
- Difference = 992 - 365 =
$627
✔ Answer: $627
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✔ Final Answers:
1.
576 kg
2.
64 kg
3.
73 hours
4.
$627
These problems involve basic subtraction and addition, focusing on real-life scenarios to help students practice arithmetic operations.
Parent Tip: Review the logic above to help your child master the concept of multiplication story problems grade 3.
