Name _______________________
Parent Signature x________________________
Addition Study Guide – Assessment Nov. 13th
1. You will be responsible for knowing the following definitions:
addend – the number being added
sum – the answer in an addition problem
Label the following number sentences using the following terms (addend,
addend, sum).
34 + 12 = 46
_______________ __________________ ______________
34 + 12 = 46 is a number sentence.
2. Addition Properties:
Commutative property – the order of addends does not change the sum.
Ex. 65 + 12 = 77
12 + 65 = 77
Identity property – any number plus 0 will equal itself.
Ex. 98 + 0 = 98
Associative property –the way in which the addends are grouped does not
change the sum.
Ex. 5 + (6 +7)
=
(5 + 6) + 7 =
5 + 13 = 18
11 + 7 = 18
3. Addition Strategies:
*You will only be responsible for knowing the traditional method but can use the
partial sums also if you choose. This will include adding money!
Traditional
Partial Sums
574
+118
145
+ 836
Practice:
Find the sum using the Traditional method.
156
+ 448
28
+ 48
467
+ 389
$16.90
+ 14.40
Find the sum using the Traditional method or Partial Sums.
428
+ 923
145
+ 154
$15.47
+ 54.36
2,298
+ 3,553
4. You will also be responsible for solving addition word problems. Remember
to think about the key words for each.
Addition Key Words
Sum
Total
In all
Altogether
And
Or
Practice: Remember to include labels or dollar signs and decimal points in your
answer. Lastly, you must show your work.
Sam went to the store and bought a toy for $14.50. He bought an additional toy for
$12.26. How much did Sam spend in all?
The pet store had 300 bags of dog food. On Tuesday, the store sold 198 bags of food.
On Wednesday they sold 35 bags. How many bags of dog food did the store sell on
Tuesday and Wednesday?
On Sally’s farm there were 567 flowers that bloomed. On Jennifer’s farm there were
443 flowers that bloomed. On Erica’s farm there were 62 flowers that bloomed. How
many total flowers bloomed on Erica and Sally’s farms?
5. Estimation. Remember that estimation is a way to check for reasonableness.
You need to be able to estimate the sum. Remember, estimate to the largest place
value unless directions tell you otherwise.
Practice:
A. Estimate the sum.
134 + 345 = _____________________
B. If you estimate the sum of 134 + 809 the answer will be between _________.
a. 800 and 900
b. 1,000 and 1,100
c. 700 and 800
d. 1,100 + 2,000
6. Patterns within addition.
Ex. 2, 4, 6, 8, 10, ________, ________, _________
Pattern: +2
Ex. 5, 10, 15, _______, 25, ________
Pattern: ______________
7. Fact Families: You will be responsible for completing fact families using
given numbers.
56, 12, 68
56 + 12 = 68
12 + 56 = 68
68 – 12 = 56
68 – 56 = 12
8. Calendar Math Concept of the Month:
You need to know the characteristics of equilateral and isosceles triangles.
Equilateral Triangle
Isosceles Triangle
All sides are equal
Only two sides are equal