Count on Tens to Add: Reteach
In this counting by tens worksheet, learners learn to use a hundred chart to add and count by tens. Students then use the chart to solve the ten problems.
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Mental Math: Subtract Tens - Homework 12.1
Now that your class can add by 10s they can start subtracting by 10s. This clear, learner-friendly worksheet provides a good example (10-rods are pictured) and 7 problems to solve. Relates groups of tens to single-digit numbers, which...
1st - 3rd Math CCSS: Adaptable
Look for Easy Numbers for E-Z Addition
All kids learn differently. For some, mental math is the best and most efficient way to add a series of numbers. After viewing a few sample problems, learners find ways to add numbers to 10 before adding them all together, and then write...
2nd - 4th Math CCSS: Adaptable