50 lessons in teaching order · every Grade 2 standard covered · free printable worksheets with answer keys
Enrichment: rebuild column subtractions where most digits are hidden. Every puzzle has exactly one solution — use place value and regrouping clues to fill in the boxes.
Make worksheets →Represent whole-number sums and differences within 100 on a number line diagram; jump by tens and then by ones, then write the answer.
Make worksheets →Add multi-digit whole numbers. Use the Focus buttons to set the number of digits, turn regrouping (carrying) on or off, add three numbers, or switch to column form.
Make worksheets →Subtract multi-digit whole numbers. Use Focus to set digits, regrouping, column form, or a missing number.
Add several numbers by choosing a smart order or grouping: look for two numbers that are quick to add first, then add the rest.
Add three or four two-digit numbers with column (vertical) addition: line up the ones and tens, add each column, and carry — building fluency.
Make worksheets →Add and subtract using the column (vertical) method, lining up digits by place value.
Make worksheets →Subtract across zeros — the standard way, from 100, and with mental strategies: count up, think addition, and a no-regrouping trick.
Show each 3-digit number with base-ten blocks, then add or subtract — deciding when to regroup.
Make worksheets →Add three-digit numbers by place value using expanded form and partial sums.
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