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Math · 3rd Grade
Multiplying by 10 and 100
Why the zeros appear — and why 'just add a zero' stops working later.
How to use it
Watch the digits slide left. The zero is the empty seat they left behind.
Free · print-ready PDF · US Letter and A4
- Grade
- 3rd Grade
- Ages
- 8–9
- Subject
- Math
- Pages
- 1
The rest of the 3rd Grade wall
49 more posters, all free to print.
The 1 Times TableEvery fact in the 1 times table, with the shortcut and the two hard ones.The 2 Times TableEvery fact in the 2 times table, with the shortcut and the two hard ones.The 3 Times TableEvery fact in the 3 times table, with the shortcut and the two hard ones.The 4 Times TableEvery fact in the 4 times table, with the shortcut and the two hard ones.The 5 Times TableEvery fact in the 5 times table, with the shortcut and the two hard ones.The 6 Times TableEvery fact in the 6 times table, with the shortcut and the two hard ones.The 7 Times TableEvery fact in the 7 times table, with the shortcut and the two hard ones.The 8 Times TableEvery fact in the 8 times table, with the shortcut and the two hard ones.The 9 Times TableEvery fact in the 9 times table, with the shortcut and the two hard ones.The 10 Times TableEvery fact in the 10 times table, with the shortcut and the two hard ones.The 11 Times TableEvery fact in the 11 times table, with the shortcut and the two hard ones.The 12 Times TableEvery fact in the 12 times table, with the shortcut and the two hard ones.Multiplication Chart 1–12The full 12×12 grid with the square numbers picked out down the diagonal.Fraction WallWhole down to twelfths as stacked bars — you can see why 1/4 beats 1/6.Place Value to Hundred ThousandsSix columns with periods, commas and how to say the number out loud.Measurement ChartLength, mass and capacity in both systems, with a real object for scale.The 8 Parts of SpeechAll eight, each with a definition and a sentence showing it at work.The Writing ProcessPlan, draft, revise, edit, publish — with what to actually do at each step.The Water CycleEvaporation, condensation, precipitation, collection — drawn as one landscape.Continents & OceansA world map with all seven continents and five oceans labelled.Multiplication PropertiesFour rules that cut how many facts you actually have to learn.Division Is SharingTwo ways to read a division, and why both give the same answer.RoundingWhich ten, which hundred — and the only digit you need to look at.Area and PerimeterThe fence and the grass — two measurements people constantly swap.Fractions on a Number LineFractions are numbers, and every one of them has a home between 0 and 1.Equivalent FractionsDifferent numbers, exactly the same amount.Working Out Elapsed TimeHow long something took — counted in friendly jumps, not by subtracting.HomophonesWords that sound identical and mean completely different things.Main Idea and DetailsThe one sentence a paragraph is about, and the sentences that hold it up.Fact or Opinion?One can be checked. The other cannot. Telling them apart is a life skill.Working Out a New WordFour kinds of clue writers leave, so you can keep reading instead of stopping.Using a DictionaryGuide words, alphabetical order, and everything an entry actually tells you.Text FeaturesThe parts of a non-fiction page that are not the paragraphs.Four Kinds of SentenceWhat the sentence is doing, and the mark it ends with.Punctuating SpeechWhere the quotation marks go, and the comma nearly everyone forgets.PrefixesTen word-beginnings that unlock hundreds of words.SuffixesTen word-endings, what each does, and how it changes the word's job.Simple MachinesSix machines that make work easier, and where you have already used each one.Forces and MotionWhat a force does, and the one that stops everything eventually.AdaptationsBody parts and behaviours that fit an animal to its home.Inside the EarthFour layers, from the rock under your feet to the solid centre.Directions on a MapThe four cardinal points, the four between them, and how to use them.Three Kinds of CommunityUrban, suburban and rural — what actually differs between them.Goods and ServicesThings you can hold, and work someone does for you.QuadrilateralsSix four-sided shapes, and why a square is also a rectangle.Right, Acute, ObtuseThree sizes of angle, measured against the corner of a page.Which Operation?The four questions that tell you whether to add, subtract, multiply or divide.Line PlotsA dot for every measurement — the graph that shows where the data clumps.What Living Things NeedThe five needs shared by every living thing, plant or animal.