Addition & subtraction worksheets

Facts & fluency 9 skills

Addition & subtraction within 10 Adding puts groups together. Subtracting takes some away. Pictures like ten-frames help you see the answer.
Addition & subtraction within 5 Plus joins numbers. Minus tells how many are left after some are taken away. Learn the small facts so you can answer without counting each time.
Addition mad minute Work fast and left to right. Skip a hard one and come back; the clock does not wait.
Addition within 20 Make a ten first when you can. It turns hard facts like 9 + 6 into easy ones like 10 + 5.
Balancing equations The equal sign means both sides are the same amount, so check that they balance.
Fact families The three numbers in the roof are a family. Write all four facts they make together.
Missing addends Find the number that makes the equation true. Count up from the part you already know.
Number bonds The two parts always join together to make the whole.
Subtraction within 20 Think addition to subtract: for 13 − 8, ask what you add to 8 to make 13.

Addition with regrouping Add the ones first. When they make ten or more, write the ones digit and carry the ten to the next column.
Mental math Turn hard numbers into friendly ones: to add 29, add 30 and then take 1 back.
Multi-digit addition & subtraction Check the sign first, line up the ones on the right, then work one column at a time. Regroup whenever a column goes over ten or needs to borrow.
Subtracting across zeros When a zero can't lend, keep moving left until you find a digit that can.
Subtraction with regrouping If the top digit is smaller, borrow: take one ten from the next column and add ten to the digit you are subtracting from.
Three-digit addition & subtraction Check the sign first, then work one column at a time starting from the ones.
Two-digit addition Add the ones first. If they make ten or more, carry a ten to the tens column.
Two-digit subtraction with regrouping If the top ones digit is too small, trade one ten for ten ones before you subtract.

Adding signed fractions and decimals Use a common denominator for fractions and align decimal places. A minus sign before a mixed number applies to the whole value.
Distance and displacement Signed change is end minus start. Distance is the absolute value of the change.
Opposites and zero pairs Opposites have equal magnitudes and opposite signs. Their sum is zero.
Signed addition on number lines Start + change = end. Positive change moves right or up; negative change moves left or down.
Subtracting signed fractions and decimals Keep the first number and add the opposite of the second. A minus sign before a mixed number applies to the whole value.