Sums - Series of Integers 1 to N - Addition to Sum (Level 1)

This math topic focuses on calculating the sum of series of consecutive integers from 1 to N. It explores the arithmetic formula for summation and challenges students to find the total of specific sequences. The questions typically ask for the sum of numbers in a series like "1+2+...+N", where N ranges from different final numbers across the activities. This helps students practice their understanding of number patterns and arithmetic series, essential components of patterning and sequences.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

Sums - Series of Integers 1 to N - Addition to Sum Worksheet

Math worksheet on 'Sums - Series of Integers 1 to N - Addition to Sum (Level 1)'. Part of a broader unit on 'Patterns and Sums - Intro' Learn online: app.mobius.academy/math/units/patterns_and_sums_intro/

1

1 + 2 + ... + 12 + 13

What would the sum be for this set of integers?

a

105

b

78

c

91

d

90

2

1 + 2 + ... + 8 + 9

What would the sum be for this set of integers?

a

44

b

55

c

45

d

36

3

1 + 2 + ... + 9 + 10

What would the sum be for this set of integers?

a

55

b

66

c

54

d

45

4

1 + 2 + ... + 13 + 14

What would the sum be for this set of integers?

a

105

b

120

c

104

d

91

5

1 + 2 + ... + 14 + 15

What would the sum be for this set of integers?

a

136

b

119

c

120

d

105

6

1 + 2 + ... + 7 + 8

What would the sum be for this set of integers?

a

28

b

35

c

36

d

45