Number (add/sub)
Lesson
We've already seen how to add multiples of 10 to a single digit number. Now we are going to add multiples of $10$10 to a $2$2 digit number.
This time we'll have to consider the hundreds place value, as it is more likely that our answer will end up as a $3$3 digit number.
Watch this video below to see how it's done.
Worked Examples
Example 1
What is $20+10$20+10?
Example 2
$68+10$68+10
Example 3
Complete the pattern by adding $10$10 each time.
$30$30, $\editable{}$, $\editable{}$, $\editable{}$, $\editable{}$, $\editable{}$