Closed Easiest way to multiply 2 digits number

[kakirukato]

thematlab.com
"To multiply two 2-digit numbers without showing work, first multiply the ones digits together, then 'cross-multiply,' and finally multiply the tens digits together.

Make sure to carry whenever a product exceeds 9. As you will see in the examples below, you must work your way from right to left to perform this trick.EX 1:
12 x 23 = ?

1. Multiply the ones digits: 2x3=6 (ones digit answer).
2. Cross-multiply and add: (1x3)+(2x2)=7 (tens-digit answer).
3. Multiply the tens digits: 1x2=2 (hundreds-digit answer).
4. Combine: 276 (the answer).

Thought Process Summary

 

[AnnBMateo]

Kp Sharing ser

 

[PHC - plokplok]

thanks for sharing ts kaso normal lang naman yan eh, ipinagsama mo lang yung dalawang step tapos tinawag na cross multiply pero kung titignan ng maigi normal process lang yan, hindi naman trick

 

[JadeRiana]

Multiplying and Dividing Algebra sana hirap na hirap ako dyan sa algebra hahaha

 

[kakirukato]

thanks for sharing ts kaso normal lang naman yan eh, ipinagsama mo lang yung dalawang step tapos tinawag na cross multiply pero kung titignan ng maigi normal process lang yan, hindi naman trick

Parang short process lang po sya

 

[kakirukato]

Multiplying and Dividing Algebra sana hirap na hirap ako dyan sa algebra hahaha

Madali lang po yan, try kong maggawa ng thread

 

[kakirukato]

Multiplying and Dividing Algebra sana hirap na hirap ako dyan sa algebra hahaha

Yung multiplying and dividing po ba ng variables ang kailangan mo?

 

[Qwerty-Ph]

63×42 triny ko iba lumabas haha bopols parin ako sa math.

 

[kakirukato]

63×42 triny ko iba lumabas haha bopols parin ako sa math.

Ah keep tryng po para maperfect nyo

 

[Hei_]

nice..thanks ts

 

[PHC - plokplok]

Parang short process lang po sya

short process nga lang po ang trick po ay tulad nito.

How to square numbers ending with 5

15²
1:Yung digit o digits bago yung last number na 5 ay i-multiply sa succeeding number nun.bale 1x2=2
2:Idagdag sa answer yung square ng 5 na 25

15²=2 + 25
15²=225

another example
25²

2x3 =6

6 + 25

25²=625

 

[AdoboKid]

Ay grabi na itu ang dami ko ng natutunan sa phc. Hahaha

 

[CanadianDestroyer]

Nice salamat sa info OP keep sharing

 

[ALPHAtagas]

pano pag ganto 76 x 76=?

 

[Masushi]

ayaw ko talaga sa math

 

[morph_]

pano pag ganto 76 x 76=?

e carry mo lang

 

[kakirukato]

pano pag ganto 76 x 76=?

6x6 = 36, edi 6 carry 3, tapos cross multiply ((7x6) + (7x6)) = 42 + 42 = 84 + yung carry 3 = 87, tapos 7 carry 8, 7x7 = 49 + yung carry 8 = 57. Bali ang sagot ay 5776

 

[PHC_Oraayt]

salamat dito ts...

 

[kakirukato]

salamat dito ts...

Welcome po

 

[edlazile]

thanks for sharing ts kaso normal lang naman yan eh, ipinagsama mo lang yung dalawang step tapos tinawag na cross multiply pero kung titignan ng maigi normal process lang yan, hindi naman trick

trick po yan sa mental computation.