Using Doubles Worksheet

Add two identical numbers (a double) using place-value decomposition, such as splitting 722+722 into 700+700 and 22+22.

Use a known double to solve a near-double addition problem by adjusting the sum up or down by 1 or 2.

Work backward from a target sum to find the number that, doubled, produces it, using halving.

Model the worked answer key's decomposition method (e.g., 700+700 then 22+22 then add) before assigning the worksheet, since students must reproduce this exact strategy, not just find a sum.

Point out that the four 'what two numbers double to make X' problems require halving, the reverse operation of the six straight addition problems above them.

Use the final two large-number problems (1246+1246 and halving 6430) as an extension after students are comfortable with the two- and three-digit problems.

Doubles addition strategy — students add two identical two-, three-, and four-digit numbers using place-value decomposition.

Near-doubles adjustment — students use a known double to solve an adjacent sum by adding or subtracting 1-2.

Halving to reverse a double — students find what number doubles to a given target by halving that target.