MAFS.3.NBT Number and Operations in Base Ten
Name: ______________________
Unit 1: Practice KEY
MAFS.3.NBT.1 Use place value understanding and properties of operations to perform multi-digit arithmetic.
MAFS.3.NBT.1.1 Use place value understanding to round whole numbers to the nearest 10 or 100
MAFS.3.NBT.1.2 Fluently add and subtract within 1,000 using strategies and algorithms based on place value, properties of
operations, and/or the relationship between addition and subtraction.
Question 1 [MAFS.3. NBT. 1.1] Equation Editor
Question 4 [MAFS.3. NBT. 1.1] Grid
What value is 786 rounded to the nearest 100?
Plot points on the number line to represent all whole
number values that round to 400 when rounded to
the nearest hundred and to 440 when rounded to the
nearest ten.
800
 
Question 2 [MAFS.3. NBT. 1.1] Multi-Select
Select all the numbers that will equal 700 when
rounded to the nearest hundred.
□ 639
□ 652
□ 693
□ 706
□ 750
Question 5 [MAFS.3. NBT. 1.2] Equation Editor
What is the sum of 146 and 125?
271
Question 3 [MAFS.3. NBT. 1.1] Matching Item
Match each number to the value of the number
rounded to the nearest 10..
Question 6 [MAFS.3. NBT. 1.2] Equation Editor
What is the sum of 143, 131, and 187?
281
280
X
290
286
X
294
X
300
461

Question 7 [MAFS.3. NBT. 1.1] Table Item
Question 10 [MAFS.4. NBT. 1.2] Multi-Select
An incomplete table is shown. Complete the table by
filling in the missing original numbers with possible
values.
Select all expressions that are equal to 224.
Original Number
Rounded to
Nearest
Ten
195,196,197,198,199
200
245,246,247,248,249
250
285,286,287,288,289
290
O
O
O
O
O
272 - 48
560 - 346
119 + 115
628 - 404
116 + 108
Question 8 [MAFS.3. NBT. 1.2] Multiple Choice
Kayla needs 73 markers to complete her painting.
She has 29 markers. How many more markers does
Kayla need to complete her painting?
ⓐ 43
Question 11 [MAFS.3. NBT. 1.2]
Equation Editor
This month Tyler collected 534 baseball cards. Last
month he collected 259 baseball cards. How many
more baseball cards did he collect this month than
last month?
ⓑ 53
ⓒ 40
ⓓ 44
Question 9 [MAFS.3. NBT. 1.1] Equation Editor
A. Round 856 to the nearest hundred. Enter
your answer in the first response box
900
B. Round 856 to the nearest ten. Enter your
answer in the second response box.
860
275
Question 12 [MAFS.3. NBT. 1.2] Equation Editor
568 – 531 =
37