Join Mrs. McCartney for an addition number talk with D.C.! Join Mrs. McCartney for an addition number talk with D.C.! Get ready to have some fun subtracting two-digit numbers with regrouping and ...

Decompose numbers to subtract. Engage in a Number Talk focused on subtraction strategies. Decompose numbers to subtract. Engage in a Number Talk focused on subtraction strategies. Can you solve the ...

You can find the difference between two numbers in more than one way. You can count up from the smaller number to the larger number. Or, you can count back from the larger number to the smaller number ...

👉 Learn how to add and subtract mixed numbers. Mixed numbers are numbers with two parts: the whole number part and the ...

The goats and their friends are having a party, but they need your help to reach the piñata. As a team, use your knowledge of tens and ones place values to help the goats release the treats from the ...

In this video, I explain how to perform two-digit operations quickly using mental strategies. We'll cover **addition**, ...

Picture a bridge made of Legos. One side has three support pieces, the other two. How would you stabilize the bridge? Most people would add a piece so that there are three supports on each side, a new ...