Add the numbers.
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Free printable number bond worksheets for kindergarten and first grade. Find missing parts, make a whole, draw dots, and use matching answer keys.
Kindergarten–Grade 1 · compose and decompose numbers. This printable activity gives children something concrete to count, color, draw, cross out, match, or explain. It provides focused practice for K.OA.A.3–4; 1.OA.B.4 and a matching answer key for the exact generated set.
Number bonds show one whole separated into two parts. Some activities supply one part and ask for the missing part; others invite the child to draw enough dots to complete the whole.
Read the top number as the whole. Check that the two lower parts combine to make that whole. Counters, buttons, or small blocks can be placed over the printed model for extra support.
Read the first direction together and let the child complete the physical action before writing a number. Ask, “How do you know?” after one item. That short explanation reveals whether the picture, model, and equation make sense together. Use crayons, a pencil, small counters, or a straightedge when the activity calls for them.
Select New problems to make a fresh set with new numbers or pictures. Switch between Worksheet and Answer key to preview both pages. The selected worksheet and answer key use the same set, so every answer stays aligned. Choose either page or both in the print controls, then print on US Letter or A4 paper. A browser print dialog can also save the activity as a PDF.
The worksheet is free for home practice, tutoring, and classroom use. Begin with a level the learner can complete accurately, then generate a new set for another short session. Hands-on work should support mathematical thinking, so accuracy and a clear explanation matter more than speed.
Whole · parts · missing number.
Generate, preview, and print the worksheet with its matching answer key.