Addition and Subtraction Within 20 – 1st Grade Math Worksheets Printable Pack

What you get

Help your first grader build real number sense with addition and subtraction within 20. This printable pack starts with pictures children can see and count (ten frames, number lines, dot cards and base-ten blocks), then moves step by step to the strategies that make facts easy: make 10, doubles, near doubles, number bonds and "think addition". Fact pages, short word problems, color-by-sum pictures and one-minute fluency tests round it out, and every answer is in the answer key at the back.

What's included (52 pages, US Letter + A4 PDFs): - Ten frames (4 pages): how many and how many more make 10, add two colors, teen numbers as 10 and some more, take away with crossed-out counters - Number lines (3 pages): read the hops forward on 0–10, read the hops back on 0–20, draw your own hops - Make 10 (3 pages): partners of 10 with a "rainbow", make 10 with two ten frames, break it apart (9 + 4 = 9 + 1 + 3 = 10 + 3) - Doubles (2 pages): doubles dot cards 1 + 1 to 10 + 10, near doubles - Number bonds and fact families (3 pages): part-part-whole bonds, fact family houses, think addition to subtract - Missing addends (2 pages): within 10 (with ten frames) and within 20 - Fact practice (6 pages): addition facts 0–10, subtraction facts 0–10, addition and subtraction within 20, mixed facts, true or false (understanding the equal sign) - 2-digit + 1-digit, no regrouping (2 pages): base-ten blocks, vertical and horizontal practice, plus a bonus 2-digit − 1-digit section - Word problems (3 pages, 18 stories): addition, subtraction, comparing, missing parts and a two-step problem, with a box to draw - Color by sum (4 pages): original pictures (rocket, turtle, owl, cottage) with a color key - 10 one-minute fluency tests: 20 facts each, from adding within 5 to missing numbers within 20 - Progress tracker: skill stars, a fluency test score log and an "Addition Facts I Know" grid - Math strategy guide: six strategies on one page, plus key math words - Answer keys for every worksheet and every fluency test, solved color-by-sum pictures, and an "Addition & Subtraction Superstar" certificate

Good to know - Every answer was computed by code and then checked again by a separate checker, including counting the counters, hops and blocks in every picture. - Every page prints well in black and white; color is only needed for coloring. - Great for 1st grade classrooms, homeschool, homework, math centers, intervention and summer review. - The pages practice skills commonly taught in 1st grade. They are not an official curriculum and are not certified by any standards organization.

How it works 1. Purchase and get an instant download (ZIP file with two PDFs and a README). 2. Print the US Letter or A4 version at 100% / actual size. 3. Work through the pages, take a fluency test, and check answers with the answer key.

Please note - This is a digital product. No physical item will be shipped. - Colors may look slightly different depending on your screen and printer. - For personal, family and single-classroom use only. Please do not resell or share the files.