Addition is one of the fundamental mathematical operations. It is the operation of combining quantities or numbers to obtain a sum. Some examples of addition sentences are provided, along with practice problems involving adding different numbers to obtain sums. The document provides information about addition and includes practice problems for readers to work through.

2.  is one of the four fundamental
mathematical operations.
 is the operation of putting together
quantities or numbers to get one value
called the sum.

3. addends
3 + 4 = 7
sum
Addition Sentence

20. 20 + 25

22. 50 + 60

24. Practice Your Skill

25. Have you ever wondered
about some things you
know were first introduced?

26. The sum that
you will get is
the year the
object was
invented.
Answer the following.

27. 1 244
+ 720
4
6
9
1

28. 1 308
+ 619
7
2
9
1
1

29. 1 131
+ 840
1
7
9
1

30. 1 082
+ 797
1 879

31. 1 102
+ 805
7
0
9
1

32. 1 235
+ 710
1 945

33. 1 438
+ 396
1 834

34. How do we
add numbers?

35. Why do we need
to learn addition?

36. Decoder

37. Find the “sum” of the
following words. Each
letter of the word stands
for a number.

38. A = 276 D = 3 824 H = 493
M = 4 915 S = 1 987
T = 1 366 U = 2 125

39. ADD
A = 276 D = 3 824
H = 493
M = 4 915
S = 1 987
T = 1 366 U = 2 125
6
1
7
1
3
1
4
A = 276
A = 276
A = 276
D = 3 824

40. SUM
A = 276 D = 3 824
H = 493
M = 4 915
S = 1 987
T = 1 366 U = 2 125
M = 4 915
7
1
2
1
0
2
9
S = 1 987
U = 2 125

41. MATH
A = 276 D = 3 824
H = 493
M = 4 915
S = 1 987
T = 1 366 U = 2 125
M = 4 915
A = 276
T = 1 366
H = 493
0
2
5
2
0
2
7

43. Goryo’s joke shop sold
845 balloons, 536
marbles, and 791 trumps
two weeks ago. How
many toys were sold from
the shop two weeks ago?
a. 2 162
b. 2 062
c. 2 172

44. There are 894 male
and 637 female
students enrolled in a
school. How many
students are enrolled
in that school?
b. 1 421
c. 1 521
a. 1 531

45. Jasmine wanted to surprise
Melody on her birthday. She
bought ₱120 worth of party
hats, ₱452 worth of party
balloons, and ₱375 worth of
party poppers and other
decorations. She also bought
a gift worth ₱786. How much
money did she spend in all? c. 1 733
b. 1 523
a. 1 633