Adding With an Open Number Line 2 digits

Front

What is an open number line?

Back

An open number line is a blank line where you can place numbers to help visualize addition and subtraction.

Front

How do you add two-digit numbers using an open number line?

Back

You start at the first number, then jump forward by the value of the second number in parts (tens and ones).

Front

What is the sum of 43 and 22?

Back

65

Front

What is the sum of 52 and 37?

Back

89

Front

What is the sum of 34 and 41?

Back

75

Front

What is the sum of 62 and 27?

Back

89

Front

What is the sum of 23 and 23?

Back

46

Front

What does it mean to 'try it on an open number line'?

Back

It means to visualize the addition by marking jumps on a number line.

Front

What is the value of 10 + 5?

Back

15

Front

What is the value of 20 + 30?

Back

50