Mixed operations Worksheets for Grade 4

Treat this as a longer sitting, about twenty minutes. Suit it to a unit review or a weekend challenge rather than a daily drill. Each equation hides one of its numbers, so remind the child to read the whole sentence first and decide what is missing. Check the work with the answer key afterward and ask the child to substitute the answer back in to prove it. In class, give small groups different versions and compare strategies for the hardest three.

Finding the hidden number turns arithmetic into early algebra. A child asked for blank plus a number that equals a total must work backward with the opposite operation. Fourth graders often guess and check, which is fine at first, but the goal is to see inverse relationships between adding and subtracting, and between multiplying and dividing. Most errors come from using the wrong inverse. It leads naturally to equations with a letter in place of the blank.

Thirty problems is long, so use 12 or 20 for a child who tires of this kind of thinking. Stacked helps with a column layout and In a row reads like a sentence, which many children find clearer when a blank sits in the middle. Switch Missing number mode off if you want the plain answer-at-the-end version for a calmer day. Pair the page with a week of single-operation practice if errors cluster on one sign.

What does the hidden number do on this page?

Each equation leaves one number blank, so the child solves for a missing addend, factor or other part instead of always finding the final answer. It builds the reasoning behind algebra.

How do I check a missing-number answer?

Put the child's number back into the blank and read the equation aloud. If both sides match, it is right. Teaching this check makes children less dependent on the answer key.

Is 30 problems too many for fourth grade?

It can be, because hidden-number problems demand more thought. Switch to 12 or 20, or split the page over two sittings. Quality of thinking matters more than finishing in one go.