A
Which of the following correctly shows rounding to the nearest ten?
a. 357 -> 350
b. 384 -> 390
c. 425 -> 420
A. 357 -> 360
Tarek is solving 461+327 using partial sums. To find the partial sum of the TENS, which numbers would he add?
a. 60+20
b.40 + 30
c. 10+70
A. 60+20
Hector is reading a book with 542 pages. He has already read 299 pages. How many pages are left to read?
a. 241
b. 243
c. 341
d. 343
B. 243
542-299=243
The school cafeteria gets 247 apples and 289 oranges to serve for lunch. During the week, students eat 352 pieces of fruit with their lunch. How many pieces of fruit are left? (Hint: 247 _ 289 = _____, _____ _ 352= _____).
a. 105
b. 184
c. 394
B. 184
247+289=536
536-352=184
Lukas saved $739. Dane saved $284 less than Lukas. How much did Dane save? (Hint: $739 _ $284= ____).
$739-$284= $455
What is seven thousand, three hundred ninety-eight written in standard form AND expanded form?
Standard: 7,398
Expanded: 7,000 + 300 + 90 + 8
Which equations are true? CHOOSE ALL THAT APPLY
a. 438-94= 431-100
b. 937-798= 939-800
c. 622-211= 611-200
d.299-135= 300-130
B. 937-798=939-800
C.622-211= 611-200
Meredith collects coins. She has 278 coins from countries in Europe. She has 433 coins from other countries. How many coins does she have ALTOGETHER? (Hint: 278 _ 443= ____)
a. 721 coins
b. 621 coins
c. 611 coins
A. 721 coins
278+443= 721
Kelvin wins 508 tickets while playing arcade games. He uses 347 tickets to get a prize. How many tickets does Kelvin have left? (Hint: 508 _ 347= ____)
a. 261 tickets
b. 241 tickets
c. 161 tickets
508-347=161
On Monday, Jenny read 248 pages of a book. On Tuesday, he read 175 pages. How many pages did Jenny read over the days?
248+175= 423
How can you decompose to solve 729-405? Fill in the blanks. 729-405= ?
729- ______ = 329
329- ______ = 324
729- 400= 329
329- 5= 324
Leah made 308 hair bows. She gave 142 bows to her sister. Then Leah made 169 bows. How many bows does she have now? Show your work. Use a letter to represent the unknown.
1. 308-142=a
2. 308-142= 166
3. 169+ 166= a
4. 169+166=335
Leah has 335 bows
Mia is adding 326 +204. She subtracts 4 from 204 to add 326+200. Then, she subtracts 4 to the sum. Do you agree with her strategy? Explain.
No- Mia needed to add 4 to the sum instead of subtracting 4.
Cassie wants to ESTIMATE the difference between two numbers.
First, she rounded both numbers to the nearest hundred.
Then, she subtracted her two rounded numbers to get 700.
Which expression could be the original subtraction problem Cassie started with? CHOOSE All THAT APPLY
a. 782-125
b. 937-149
c. 852-163
A. 782-125
C. 852-163
On Monday, Ellie jumps the ro0pe 213 times. Then she rests. After resting, she jumps the rope 324 times. Then she rests. Finally, she jumps the rope 186 times. Which expressions show how to find the total number of jumps? CHOOSE ALL THAT APPLY
a. 324+186+213
b. 186+213-324
c. 213+324+186
A. 324+186+213
C. 213+324+186
A librarian has an even number of new books to put in two bookcases. Check Yes or No to tell if each arrangement is possible with an even number to put on the shelves.
1. No
2. Yes
3. Yes
Victor's car needs $1,472 worth of repairs. His sister says that amount is about $1,500 in repairs. Which best describes how she came up with her estimate?
a. She rounded to the nearest one.
b. She rounded to the nearest hundred.
c. She rounded to the nearest thousand?
B. She rounded to the nearest hundred