Let’s Learn!
Use number lines to help you add.
Goal:
Goal:
Think About It!
Goal: Can you add on a number line?
Mighty Monkey has already traveled 90 feet by swinging on vines. He travels another 29 feet. How many feet has Mighty Monkey traveled altogether? We can find the sum by adding 90 + 29 on a number line.
This is a number line. It has an arrow on each end, and each line is labeled with a number. We can add on a number line by jumping to the right.
The numbers get larger when you count to the right.
They get smaller when you count to the left.
Let’s add using this number line! First, put a dot above the larger addend on the number line.
90 + 29 = ___
Look at the digits in the place values of the smaller addend.
90 + 29 = ___
2 tens 9 ones
29 is made up of 2 tens and 9 ones. That means we can jump to the right 2 tens and 9 ones.
90 + 29 = ___
2 tens 9 ones
The number that the last jump lands on is the sum!
Mighty Monkey traveled 119 feet because 90 + 29 = 119.
What is 15 inches + 44 inches?
15 + 44 = ___
1 tens 5 ones
- 29
- 59
- 72
We started at 44 because it is the larger addend and jumped 15 because it is the smaller addend. The sum is 59.
Good job! We started at 44 because it is the larger addend and jumped 15 because it is the smaller addend. The sum is 59.
We started at 44 because it is the larger addend and jumped 15 because it is the smaller addend. The sum is 59.
Summary
Questions answered correctly:
Questions answered incorrectly: