Word Problems
Lynn needs 20 minutes to get ready and 10 minutes to eat breakfast. She must leave by 8:00 a.m.
What time should she wake up?
8:00 − (20 + 10 minutes) = 7:30 a.m.
Write 679,527 in word form.
six hundred seventy-nine thousand, five hundred twenty-seven
Round 4,672 to the nearest hundred.
4,672 → nearest hundred = 4,700
Solve:
799 + 432
1,231
Which is greater?
67,000 or 76,000
76,000 is greater
67,000 < 76,000
Emma ran 3 km and then 7 km.
How many meters did she run total?
3 km + 7 km = 10 km
10 km = 10,000 meters
Write four hundred seven thousand, two hundred thirty-five in base ten numeral form.
407,235
Round 67,652 to the nearest thousand.
67,652 → nearest thousand = 68,000
Solve:
54,719 + 28,485
83,204
Complete the ratio:
1 kilometer = ____ meters
1 kilometer = 1,000 meters
Roberto drank 500 mL before the race and 1 liter after the race.
How many milliliters total?
500 mL + 1 L
1 L = 1,000 mL
Total = 1,500 mL
Write 679,527 in expanded form.
600,000 + 70,000 + 9,000 + 500 + 20 + 7
Round 676,527 to the nearest ten thousand.
676,527 → nearest ten thousand = 680,000
Solve:
10,500 − 6,988
3,512
Complete the table:
3 hours = ____ minutes
3 hours = 180 minutes
A student arrives at school at 8:30 a.m. It takes 15 minutes to get dressed, 20 minutes to eat, and 25 minutes to get to school.
What time did the student wake up?
15 + 20 + 25 = 60 minutes
8:30 − 1 hour = 7:30 a.m.
What digit is in the ten-thousands place in 679,527?
Ten-thousands digit = 7
Round 676,527 to the nearest hundred thousand.
676,527 → nearest hundred thousand = 700,000
Solve using the standard algorithm:
5,372 − 465
4,907
Which weighs about 1 kilogram?
pencil
desk
pair of shoes
Pair of shoes
A runner ran 12 km on Monday, 8 km on Tuesday, and 5 km on Wednesday.
How many meters did they run in all?
Explain your thinking.
12 km + 8 km + 5 km = 25 km
25 km = 25,000 meters
Write this number in base ten numeral form and expanded form.
four hundred seven thousand, two hundred thirty-five
407, 235
400,000 + 7,000 + 200 + 30 + 5
Which rounding gives a more reasonable estimate for 676,527: nearest thousand or nearest hundred thousand?
Explain why.
Nearest thousand is more reasonable
✔ Closer to the original number
✔ Keeps more place-value accuracy
Solve using the standard algorithm:
10,100 - 2,978
And check your answer using addition.
10,100 - 2,978 = 7,122
7,122 + 2,978 = 10,100
What is the best estimate for the height of a classroom door?
2 kilometers
2 meters
2 inches
2 centimeters
Explain your choice.
2 meters
A classroom door is about 6–7 feet tall