We were given the number 112, and asked to discover how many different ways it can be shown using the base ten rods. Below are 3 of the multiple ways it can be shown.
Next, we were given an equation, and told to show how we got our answer using the base ten rods.
57 + 39 = ?
57 + 39 = ?
We were now given a subtraction equation, and told to show how we got our answer using the base ten rods.
62 - 29 = ?
For this equation, I grouped the two numbers into their base tens. From there, I didn't have enough one's in the 62, so I changed one of the ten rods into 10 ones.
From there, I took 29 away from the 62 through modelling (I made the two piles match)
Then what I had left over was 33!
From there, I took 29 away from the 62 through modelling (I made the two piles match)
Then what I had left over was 33!