18.11.19 - Subtraction using Base 10

Over the past few weeks, we have been using Base 10 to add and subtract. Today, we used Base 10 to subtract 2-digit numbers from another or a 2-digit number from a 3-digit number which crossed the 10s boundary. This meant that for every number sentence we completed, we had to exchange a 10 for 10 ones to find how many were left. We worked in pairs and recorded our answers onto a white, ensuring tha5 we checked our answers and corrected them when they were incorrect. Keep up the hard work. Miss Duong