Multiplication Tricks for Kids — The 7 That Actually Save Time

Google will give you 50 "multiplication tricks for kids" lists if you ask. Most are variations of "sing the times tables." The seven methods below are different — they save enough time to matter on timed tests, and they produce the "wait, I just did that" moment.

TL;DR: The seven multiplication tricks that actually save time on timed tests: ×11, ×5, ×25, squaring numbers ending in 5, near-base (Nikhilam), teen × teen, and ×9. Each saves 5-20 seconds per appearance and produces the "wait, I just did that" moment that rebuilds confidence.

Google will give you 50 "multiplication tricks for kids" lists if you ask. Most of them are variations of "sing the times tables" or "use your fingers for 9s." Those work for kids who weren't struggling anyway. The seven methods below are different — they are the ones that save enough time to actually matter on a timed test, and they produce the "wait, I just did that" moment that interrupts the "I'm bad at math" sentence.

From the author

I used to be the parent who said "you just need to memorize the times tables."

Then I watched my son spend six months failing to memorize the 7s. I started reading about Vedic Math, mostly to prove it was overhyped. The ×11 trick converted me in one evening — I did it in front of Arjun; he landed it on the third try. The seven techniques below are the ones that produced the same "wait, I just did that" moment for enough other parents' kids that I now treat the sequence as reliable.

For the broader orientation to mental math, see The mental math guide for parents of kids 9–16. This post is the multiplication-only deep dive, with specific examples and the seconds-saved numbers you should expect.

The 7 that actually save time

1. ×11 for any two-digit number

The pattern: Split the two digits. Add them. Put the sum in the middle.

  • 43 × 11 → split 4 _ 3 → middle: 4+3=7 → 473.
  • 81 × 11 → split 8 _ 1 → middle: 8+1=9 → 891.
  • 68 × 11 → split 6 _ 8 → middle: 6+8=14 → carry the 1 → 748.

Seconds saved: ~8-10 per use vs. standard long multiplication. Full walkthrough: The ×11 Vedic trick.

2. ×5 by halving + zero

The pattern: × 5 = (÷ 2) × 10. Halve, then append a zero.

  • 46 × 5 → half of 46 is 23 → append zero → 230.
  • 83 × 5 → half of 83 is 41.5 → append zero → 415.
  • 148 × 5 → half of 148 is 74 → append zero → 740.

Seconds saved: ~5-7 per use. Walkthrough: The ×5/×25/×50 halving trick.

3. ×25 by quartering + two zeros

The pattern: × 25 = (÷ 4) × 100. Divide by 4, then append two zeros.

  • 32 × 25 → 32 ÷ 4 = 8 → append two zeros → 800.
  • 48 × 25 → 48 ÷ 4 = 12 → append two zeros → 1200.
  • 60 × 25 → 60 ÷ 4 = 15 → append two zeros → 1500.

Why this one matters: ×25 appears constantly on word problems (price × quantity, time × rate, geometry) and the standard algorithm requires at minimum four partial products. The quarter-and-append-two-zeros move is 10× faster.

4. Squaring any number ending in 5

The pattern: Multiply the front part by itself-plus-one, append 25.

  • 35² → 3 × 4 = 12 → append 25 → 1225.
  • 65² → 6 × 7 = 42 → append 25 → 4225.
  • 85² → 8 × 9 = 72 → append 25 → 7225.
  • 105² → 10 × 11 = 110 → append 25 → 11025.

Seconds saved: ~12-15 per use vs. 85 × 85 the long way. This one is a parent's favorite because the kid cannot pattern-match this to anything she's been taught in school, so it feels like a magic trick that happens to be true.

5. Multiplying numbers near 100 (Nikhilam)

The pattern: Find each number's distance from 100. Subtract diagonally for the left half. Multiply the two distances for the right half. Concatenate.

  • 97 × 98 → deficiencies 3 and 2 → left: 97-2 = 95 → right: 3×2 = 06 → 9506.
  • 96 × 95 → deficiencies 4 and 5 → left: 96-5 = 91 → right: 4×5 = 20 → 9120.
  • 103 × 107 → surpluses +3 and +7 → left: 103+7 = 110 → right: 3×7 = 21 → 11021.

Seconds saved: ~15-20 per use. Walkthrough: Near-base multiplication (Nikhilam).

6. Teen × teen (any 12-19 × 12-19)

The pattern: Add the units digit of one number to the whole other number. Multiply by 10. Then add (units × units).

  • 14 × 17 → 14+7=21 → ×10 → 210 → +(4×7=28) → 238.
  • 13 × 16 → 13+6=19 → ×10 → 190 → +(3×6=18) → 208.
  • 18 × 19 → 18+9=27 → ×10 → 270 → +(8×9=72) → 342.

Seconds saved: ~10-12 per use. Walkthrough: The teen × teen pattern. Shows up on middle-school tests regularly because the teens-table is the one kids never fully memorize.

7. ×9 by subtracting from ×10

The pattern: × 9 = (× 10) − (× 1). Append a zero, then subtract the original.

  • 7 × 9 → 70 − 7 → 63.
  • 24 × 9 → 240 − 24 → 216.
  • 67 × 9 → 670 − 67 → 603.

Why this one: the ×9 table is the one most kids struggle with in grade 3-4. This method converts a memorization problem into a two-step mental subtraction problem — which almost every kid finds easier than "I just have to know what 9×7 is."

How to teach these without turning them into another drill

The common parent mistake is turning the tricks into practice sheets. Don't. The specific framing that works, in order:

  1. You go first. Learn it yourself for 60 seconds. Then say to your kid: "Watch this — I just learned a trick. Pick any two-digit number." She picks 43. You do 43 × 11 = 473 in three seconds.
  2. Teach the pattern once. Not in school-teacher voice. "Here's what I did: split the 4 and the 3, added them in the middle. Watch another one." Do a second one. Then hand her the pencil.
  3. Let her try 3-4. She gets them. Make the energy "we're in on a secret," not "sit down and practice."
  4. Stop at ~10 minutes. Don't drill it into the ground. The first-win effect is the point; grinding it out dissolves it.
  5. Teach the next trick the next day. One per day for a week. By Friday your kid will know 5 of these cold and will have internalized "there is a method for this."

The free 5-Day Mental Math Quick Start is exactly this protocol — one trick per day, 20 minutes, five days. The PDF has worked examples, 15 fresh practice problems per day, and the parent script for each day.

If your kid refuses to try

Refusal to try a new math method, at any age, is almost always a math-anxiety signal — not a motivation signal. The identity sentence ("I'm not a math person") is doing the refusing. Pushing harder deepens it.

Diagnose first: 90-Second Math Anxiety Check. If your kid comes back Established or Severe, the math-anxiety pillar is the first read — the tricks above only work after the amygdala signal is lower than it is right now.

Research anchors: Boaler (Stanford) on mathematical identity formation; cognitive-load research on working memory in multi-step procedures.

Frequently asked

What's the fastest way to teach my kid multiplication?

Pick one shortcut and go deep for 10 minutes. ×11 is the highest first-win: split the two digits, add in the middle. 43 × 11 = 473 in three seconds. Hand your kid the pencil after you demo twice; she'll land it on the third try.

Which multiplication trick should I teach first?

×11 by Ekādhikena Pūrveṇa. It's the highest-wow entry point in the Vedic system — almost every 9-16 year old gets it on the first try, which is exactly the first-win mathematical identity needs.

Do these tricks work for the SAT?

Three of them appear on SAT Module 2 regularly: ×11, squaring-ending-in-5, and Nikhilam near-base. Combined, they save 40-90 seconds per 35-minute section — enough for one or two extra attempted questions.

What if my kid refuses to try?

Refusal is almost always math anxiety, not motivation. Diagnose with the 90-Second Math Anxiety Check first. The tricks only land once the amygdala signal is lower than it currently is — pushing harder on the techniques deepens the refusal.

Get all 7 tricks in the free 5-Day Quick Start PDF → — 55 pages. One trick per day. 15 practice problems each day. Parent script included.
https://www.thevedicmind.com/quick-start

Related

  • https://www.thevedicmind.com/blog/mental-math-hub-guide
  • https://www.thevedicmind.com/blog/multiply-by-11-vedic-trick
  • https://www.thevedicmind.com/blog/near-base-multiplication-vedic