Curated OER
Mental Math: Adding 10s
To develop mental math skills for adding 10s, learners read an example, solve one carefully scaffolded problem, and then complete 6 more independently. Pictures of 10-rods make the connection between sets of 10 and the corresponding...
Curated OER
Add Tens
Learners solve six story problems about adding 10s. Provide 10-rods or objects they can group into 10s to visualize what is being asked. Two of the problems provide irrelevant information; with discussion and guidance, this is also a...
Curated OER
Adding Tens
In this math activity, students solve thirty addition problems. In each problem, students add two different two-digit numbers.
Curated OER
Mental Math: Add Tens Practice 10.1
In this adding tens worksheet, students solve 11 problems in which tens are added. Students may use a basic fact to help. Example: 2 tens + 1 ten.
Curated OER
Counting On Tens
In this counting on tens worksheet, students use a chart from 0 to 50 to add tens to a number. Students start at the specified number, then move as many rows as necessary to add the multiple of ten.