1. Find the value of each difference.

2. Jada has drawn this picture to find the value of a difference. What difference did Jada calculate? Explain how you know.

   

Find the value of each difference. Show your thinking, using drawings, numbers, or words.

Jada finds the value of . She says she can take ones from ones, tens from tens, and hundreds from hundreds, without decomposing. Do you agree? Explain your reasoning.

Find the value of each difference. Show your thinking, using drawings, numbers, or words.

Find the value of each difference in a way that makes sense to you. Show your thinking, using drawings, numbers, or words.

Here is how Kiran finds the value of .

1. Why does Kiran’s method work? Explain your reasoning.
2. Use his method to find

1. Choose a 3-digit number to show subtracting by place value is a good strategy for finding the value of . Explain your reasoning. Find the value of the difference.

2. Choose a 3-digit number to show adding on to the lesser number is a good strategy for finding the value of . Explain your reasoning. Find the value of the difference.

3. Choose a 3-digit number to show decomposing 2 different units is a good strategy for finding the value of . Explain your reasoning. Find the value of the difference.