Name: ________________________________
Date: _______________
NVACS: Number and Base Ten Operations,
Practice for Grade 4, 4.NBT.B
In math we are working on adding multiple digit numbers, but I don’t want the students to
“stack” (standard algorithm) yet. The goal is for them to understand why that works, so
here are three examples of how we
Thousands
Hundreds
Tens
Ones
can model the same problem.
*
Tens
**
*
1242 +
726
Ones
*******
*****

12
2
*
3
4
1
Place
value
disks:
**
****
**
*******
**
******
9
6
8
If you have 10 or more in any place, remember to gather up your “10” and send it to
the next place on the left. (Ex. 27 +15 = 42)
Stacked Expanded notation:
Expanded notation is writing the value of each digit.
1000 + 200 + 40 + 2
+
700 + 20 + 6
1000 + 900 + 60 + 8 = 1968
Number line:
+6
1242
+3
27
+2
30
1
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+20
1248
+700
1268
1968
+10
32
42
This can be tricky sometimes,
but I tell the students to try to make a “10”
and then add the rest. ( Ex. 27 + 15)
Name: ________________________________
Date: _______________
NVACS: Number and Base Ten Operations,
Practice for Grade 4, 4.NBT.B
Please use two of the addition strategies to answer the following expressions.
1.) 246 + 2002
Please use two of the addition strategies to answer the following expressions.
2.) 1217 + 3863
2
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Name: ________________________________
Date: _______________
NVACS: Number and Base Ten Operations,
Practice for Grade 4, 4.NBT.B
Please use two of the addition strategies to answer the following expressions.
3. ) 4217 + 3312
Please use two of the addition strategies to answer the following expressions.
4.) 1862 + 359
3
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