Training Grounds
Addition
Stack columns, carry glowing tens, and grow number-bond trees.
Try the tool, then solve five.
thinking
47
+ 26
73
The ones make 10 or more, so carry a glowing ten.
Tips
Add the bigger number first when counting on.
Make ten to simplify tricky ones.
When ones make 10 or more, carry a ten into the tens column.
Practice Problems
1. 47 + 26 equals?
2. 125 + 75 equals?
3. 38 + 9 equals?
4. 64 + 18 equals?
5. 29 + 31 equals?