Grade 1 - Mathematics 2.9 Counting by 10 (WIZ Math)

Method:

Read out the numbers given.

Notice the pattern in the sequence of numbers.

Guess the number that should come next.

Example

5, 15, 25, 35,___
Look at the numbers in the above sequence. Here the difference between one number to the next is 10, therefore, it is skip counting by 10. That is, to each number we add 10 to get the next number.
In the above example,
15 - 5 = 10
25 - 15 = 10
35 - 25 = 10
Hence, to each number we add 10 to get the next number.

Answer: 45

Directions: Find the missing number. Write 5 examples and show your work.