Word Problems
A bookstore has 6 boxes of books. Each box contains 20 books. On Monday, the bookstore sold 16 books. How many books remain to be sold?
104 books
Round 534 to the nearest 10.
530
250
+450
_____
700
750 - 400
350
2 x __ = 16
Write the three related facts without the unknown.
8 x 2 = 16
16 = 2 x 8
16 = 8 x 2
Damian bought two books at the Book Fair for $4.00 each. He paid the cashier with a $20 bill. How much change will Damian get after paying for the books?
$12.00
Round 749 to the nearest 100.
700
What two numbers can make a sum of 147?
Answers may vary.
753 - 551
202
24 / __ = 3
Find the unknown and write the 3 related facts.
24 / 8 = 3
3 x 8 = 24
8 x 3 = 24
A third-grade class is collecting bottles for an art project. On the first day of collecting bottles, 2 students each bring in 8 bottles. By the end of the week, 127 bottles are added to the amount brought in on the first day. What is the total number of plastic bottles the third-grade class has by the end of the week?
143 bottles
Round 347 to the nearest ten and the nearest hundred.
350
300
693
+345
______
1,038
What is the related subtraction equation for 742 + ___ = 1256
514 + 742 = 1256
Write a two sets of related facts that use doubles.
Answers that use the same addends or multiples.
The third graders are having a bake sale to raise money for a field trip. Alicia brought 12 cookies, Bart brought 18 cookies, Cathy brought 15 cookies, and Doug brought 11 cookies. The cookies are being placed in bags with seven cookies in each bag. How many bags of cookies can be made?
8 bags of cookies
When do you round up? When do you round down
4 or less and you round down.
Find the missing addend.
425
+ [___]
______
792
367
987 - 421 - 316
250
How many different numbers are required to make 4 related facts?
3 numbers
__ () __ = __
Graham earns $6 for every crate of oranges he picks. Lynn earns $8 per hour babysitting. How many crates of oranges does Graham need to pick to earn the same amount that Lynn earns for 3 hours of babysitting?
6 x [4] = 24
8 x 3 = 24
4 crates of oranges.
What is a reasonable estimated sum for 356 + 233?
360 + 230 = 590
or
400 + 200 = 600
567
289
+856
_____
1,712
497 - 803
306
Make related facts using the number 24, but without using 8.
6 x 4 = 24
4 x 6 = 24
24 = 6 x 4
24 = 4 x 6