Multi-Digit Math (Grade 2–3)
Interactive Number Line to 100
Model 2-digit addition and subtraction, skip counting by 5s and 10s, and place value strategies up to 100.
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Multi-Digit Math Strategies
Teaching Double-Digit Math with a 0 to 100 Number Line
The number line to 100 allows 2nd and 3rd grade students to transition from single-unit jumps to landmark jumps of 10s and 1s:
Adding Tens & Ones
Model 40 + 35 by taking a +30 jump to 70, then a +5 jump to land on 75.
Skip Counting 5s & 10s
Set step sizes to 5 or 10 to demonstrate equal interval skip counting up to 100.
Distance & Difference
Calculate difference between two numbers (e.g. distance between 35 and 80 = 45).