Page 8 - ตัวอย่าง Math Solution 1
P. 8
Example 3
Write the next five numbers in each sequence.
1) 5, 2, -1, ...
2) -1, -3, -5, ...
3) 0, -6, -12, ...
4) -10, -6, - 2, ...
1) The sequence is to decrease by 3 units. The next five numbers are -4, -7, -10, -13,
Solution
and -16.
2) The sequence is to decrease by 2 units. The next five numbers are -7, -9, -11, -13,
and -15.
3) The sequence is to decrease by 6 units. The next five numbers are -18, -24, -30, -36,
and -42.
4) The sequence is to increase by 4 units. The next five numbers are 2, 6, 10, 14, and 18.
EXERCISE 2
1. Fill in the blank with the next three numbers according to the pattern.
Integer Increasing by Decreasing by Answer
1) -2, -4, -6, ... - 2 -2, -4, -6, -8, -10, -12
2) -1, -3, -5, ...
3) -2, 0, 2, ... 2 - -2, 0, 2, 4, 6, 8
4) -3, -6, -9, ...
5) -4, -1, 2, ...
6) -2, -7, -12, ...
7) -6, -5, -4, ...
8) 5, 1, -3, ...
9) 6, 2, -2, ...
10) 1, -4, -9, ...
12 Math Solution 1 Book 1
