Let’s solve each problem one by one, step by step.
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Problem 1: Mrs Anderson waiting for the bath
She waited while:
- Son used bathroom: 25 minutes
- Daughter used bathroom: 35 minutes
- Husband used bathroom: 38 minutes
Add them up:
25 + 35 = 60
60 + 38 = 98
So she waited
98 minutes.
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Problem 2: Pat mopping rooms
We need to find total time for:
- 10 small offices → each takes 7 min → 10 × 7 = 70 min
- 3 large offices → each takes 10 min → 3 × 10 = 30 min
- 3 hallways → each takes 12 min → 3 × 12 = 36 min
- 3 meeting rooms → each takes 20 min → 3 × 20 = 60 min
Now add all:
70 + 30 = 100
100 + 36 = 136
136 + 60 = 196
Total time:
196 minutes
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Problem 3: Mrs Johnson rolling dice to get to 100
She rolled these pairs:
- 5 and 3 → 8
- 5 and 6 → 11
- 6 and 6 → 12
- 3 and 4 → 7
- 5 and 3 → 8
- 6 and 5 → 11
- 4 and 4 → 8
Add them step by step:
Start with 0.
0 + 8 = 8
8 + 11 = 19
19 + 12 = 31
31 + 7 = 38
38 + 8 = 46
46 + 11 = 57
57 + 8 = 65
She has 65 so far.
She needs 100, so:
100 - 65 = 35
She needs
35 more.
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Problem 4: Curtis mowing lawns
He mowed every Saturday for two months, starting June 1st.
June has 4 Saturdays: June 1, 8, 15, 22, 29 → that’s 5 Saturdays? Wait — let’s check.
If first Saturday is June 1, then:
- June 1 (Sat)
- June 8 (Sat)
- June 15 (Sat)
- June 22 (Sat)
- June 29 (Sat)
That’s 5 Saturdays in June.
Then July: next Saturday after June 29 is July 6, then July 13, July 20, July 27 → that’s 4 more.
But wait — “for the last two months” — if he started June 1, and it’s now end of July, that’s 5 (June) + 4 (July) = 9 times?
Wait — let’s think again.
The problem says: “He has mowed the Green's lawn every Saturday for the last two months. The first Saturday was the 1st of June.”
Assuming “last two months” means June and July.
June 1 to July 31.
Saturdays in June: 1, 8, 15, 22, 29 → 5 days
Saturdays in July: 6, 13, 20, 27 → 4 days
Total = 5 + 4 = 9 times
Each time he gets $20.
So 9 × 20 = 180
They owe him
$180
Wait — but maybe “two months” from June 1 would be until July 31, which includes 9 Saturdays? Yes.
Alternatively, sometimes people count full weeks — but since it says “every Saturday”, and lists start date, we count all Saturdays between June 1 and end of July.
Yes, 9 times.
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Problem 5: Brian babysitting
He babysat:
- Tuesday: 2 hours
- Friday: 1.5 hours
- Saturday: 3 hours
- Sunday: 2 hours
Add hours:
2 + 1.5 = 3.5
3.5 + 3 = 6.5
6.5 + 2 = 8.5 hours total
Paid $7 per hour.
So 8.5 × 7
Break it down:
8 × 7 = 56
0.5 × 7 = 3.5
Total = 56 + 3.5 = 59.5
He earned
$59.50
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Final Answer:
Problem 1: 98 minutes
Problem 2: 196 minutes
Problem 3: 35
Problem 4: $180
Problem 5: $59.50
Parent Tip: Review the logic above to help your child master the concept of 2nd grade math problem solving worksheet.
