Decimal Patterns

Which of the following lists of numbers shows an addition pattern?

• 0.1, 0.2, 0.4, 0.5

• 0.2, 0.4, 0.6, 0.8

• 0.8, 0.6, 0.4, 0.2

• 0.08, 0.06, 0.05, 0.03

Answer explanation

This is the only list of numbers that shows the same addition from each number to the next.

Are the values increasing or decreasing?

5.2. 5.8, 6.6, 7.0.

• increasing

• decreasing

Complete the pattern

Write the first 4 terms of the sequence. Rule: Start at 19.3, add 1.8

• 19.3, 21.1, 22.9, 24.7

• 21.1, 22.9, 24.7, 26.5

• 19.3, 17.5, 15.7, 13.9

• 17.5, 15.7, 13.9, 12.1

Write a rule for the sequence.

5.25, 5.00, 4.75, 4.50, ...

• 4.25, 4.00, 3.75, 3.50

• Subtract

• Subtract 0.25

• Subtract 5.25-5.00

Find the unknown term.

26.1, 23.8, 21.5, ______, 16.9

• 19.2

• 20.2

• Subtract 2.3

• 23.8

Find the unknown term.

4.62, 5.03, ______, 5.85, 6.26

• Add 0.41

• 5.43

• 5.44

• 5.67

Write the first 4 terms of the sequence.

Rule: start at 0.87, add 2.15

• 3.02, 5.17, 7.32, 9.47

• 0.87, 3.02, 5.17, 7.32

• 0.87, 2.912, 4.106, 6.256

• 2.912, 4.106, 6.256, 8.310

Write the first 4 terms of the sequence. Rule: start at 29.7, subtract 0.4

• 29.7, 30.1, 30.5, 30.9

• 29.7, 25.7, 21.7, 17.7

• 29.3, 28.9, 28.5, 28.1

• 29.7, 29.3, 28.9, 28.5

How does the 6 in 0.60 compare to the 6 in 0.06?

• The 6 in 0.60 is 10 times as much as the 6 in 0.06

• The 6 in 0.60 is 6 times as much as the 6 in 0.06

• The 6 in 0.60 is equal to the 6 in 0.06