Rounding to tens
Round 37 to the nearest ten
40
300
Round 8,999 to the nearest 1000
9,000
Which is the best estimate of this sum?
439 + 512 =
a. 500 + 500 = 1,000
b. 400 + 500 = 900
c. 500 + 600 = 1,100
d. 300 + 400 = 700
b. 400 + 500 = 900
There are 68 students in the class. Each table seats 10 students. How many tables will the class need?
7 tables
Round 85 to the nearest ten
90
700
Round 17,382 to the nearest 1,000
17,000
Which is the best estimate of this difference?
1,000 - 482 = ?
a. 1,000 - 400 = 600
b. 1,000 - 500 = 500
c. 1,000 - 300 = 700
b. 1,000 - 500 = 500
Mrs. Smith has $308. She spends $99 on a new jacket. Estimate how much money she has left to the nearest hundred.
$200
Round 391 to the nearest ten
390
Round 750 to the nearest 100
800
Round 827 to the nearest 1,000
1,000
Which is the best estimate of this sum?
181 + 689 =
a. 200 + 600 = 800
b. 100+ 600 = 700
c. 200 + 700 = 900
d. 100 + 900 = 1,000
c. 200 + 700 = 900
Mrs. Wagner spends $39 at Target and $26 at Walmart. Round her total to the nearest 10.
$70
Round 785 to the nearest 10
790
Round 6,281 to the nearest 100
6,300
Round 3,128 to the nearest 1,000
3,000
What is the best estimate for this difference?
(Round to thousands, then subtract)
21,484 - 938 =
a. 21,000 - 1,000 = 20,000
b. 22,000 - 1,000 = 21,000
c. 20,000 - 1,000 = 19,000
a. 21,000 - 1,000 = 20,000
9
Round 1,899 to the nearest 10
1,900
Round 3 to the nearest 100
0
Round 183,301 to the nearest 1,000
183,000
Which of these is the BEST estimate?
(Round each to the nearest hundred, then add)
432 + 324 + 901 = ?
a. 1,500
b. 1,400
c. 1,300
d. 1,600
d. 1,600
You need at least 44 cups of flour to make buns for the church picnic. Flour is sold in bags of 10 cups. Which would be your best option for finding out how many bags you need?:
a. Round 44 to the nearest 10
b. Round 44 to the nearest 10, and buy and extra bag
c. Round 44 to the nearest 100, and buy an extra bag
d. Round 44 to the nearest 100
b. Round 44 to the nearest 10, and buy and extra bag