Help students build confidence and fluency with 2- and 3-digit addition and subtraction through this set of 4 carefully scaffolded PowerPoint resources. Each resource gradually increases in difficulty ...

his lesson introduces Grade 1 students to adding two-digit numbers without carrying. Students learn to identify the tens and ones and add each place separately. For example, 42 + 31 = 73: Ones: 2 + 1 ...