Practise column addition with one exchange from the ones column to the tens column. This resource includes two worksheets: one for adding two 2-digit numbers and one for adding two 3-digit numbers.

Yasuko Yamaguchi helps students add two numbers using an open number line. Yasuko Yamaguchi helps students add two numbers using an open number line. Let's Learn is available to stream on pbs.org and ...

Charlie Bardey shows different ways to make 10 when adding two numbers. Charlie Bardey is planning a picnic for friends. He needs to tally the number of people who would like bananas or strawberries.

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 ...