Multiplying DecimalsIgnore the points, multiply, then count them back in.5th GradeMultiply as if the decimal points were not there, then put one back at the end.1IGNORE THE POINTSTreat 2.4 × 1.3 as 24 × 13.2MULTIPLY NORMALLY24 × 13 = 312.3COUNT THE DECIMAL PLACES2.4 has one, 1.3 has one. Two altogether.4PUT THE POINT BACKCount two places from the right: 3.12.WORKED0.5 × 0.3 → 5 × 3 = 15 → two places → 0.151.25 × 4 → 125 × 4 = 500 → two places → 5.00 = 5Estimate first. 2.4 × 1.3 is roughly 2 × 1, so about 3 — which makes 3.12believable and 31.2 not.Multiplying Decimalslearnposters.com
Multiplying Decimals — printable math wall chart from LearnPosters. Free vector PDF, US Letter and A4.

Multiplying Decimals, step by step

Multiply as if the decimal points were not there, then put one back at the end.

  1. IGNORE THE POINTSTreat 2.4 × 1.3 as 24 × 13.
  2. MULTIPLY NORMALLY24 × 13 = 312.
  3. COUNT THE DECIMAL PLACES2.4 has one, 1.3 has one. Two altogether.
  4. PUT THE POINT BACKCount two places from the right: 3.12.

worked

  • 0.5 × 0.3 → 5 × 3 = 15 → two places → 0.15
  • 1.25 × 4 → 125 × 4 = 500 → two places → 5.00 = 5

Estimate first. 2.4 × 1.3 is roughly 2 × 1, so about 3 — which makes 3.12 believable and 31.2 not.

Questions about the Multiplying Decimals poster

What’s on the Multiplying Decimals poster?
4 numbered steps, with a full worked run-through. Multiply as if the decimal points were not there, then put one back at the end. IGNORE THE POINTS — Treat 2.4 × 1.3 as 24 × 13.; MULTIPLY NORMALLY — 24 × 13 = 312.; COUNT THE DECIMAL PLACES — 2.4 has one, 1.3 has one. Two altogether.; PUT THE POINT BACK — Count two places from the right: 3.12.. Estimate first. 2.4 × 1.3 is roughly 2 × 1, so about 3 — which makes 3.12 believable and 31.2 not.
Who is the Multiplying Decimals poster for?
Multiplying Decimals is filed under 5th Grade (ages 10–11), so it matches what that year asks a child to remember. It is equally useful to an older student revisiting math, and to the parent or teacher answering the question at the kitchen table.
When should you use the Multiplying Decimals poster?
Count the decimal places in the question before you start. That is your answer's place count. A wall chart earns its place by being glanceable from where the work is happening, so Multiplying Decimals belongs on the wall where that math work actually happens, within glancing distance, rather than filed away.
What other posters go with Multiplying Decimals?
Dividing Decimals, Adding Unlike Fractions and Area & Perimeter sit alongside Multiplying Decimals in the 5th Grade set. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Dividing DecimalsAdding Unlike FractionsArea & Perimeter
Is the Multiplying Decimals poster free to download and print?
Yes. Multiplying Decimals downloads as a free PDF with no account, no email and no watermark, like everything else in the 5th Grade set. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Multiplying Decimals poster print at?
Multiplying Decimals is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Multiplying Decimals loses nothing.Printing guide

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