Solve within seconds- tricks from Mental Math & Vedic Math

Learn a quick technique to multiply by 11 using a three-part rule: copy outer digits, write their sum in the middle, handle carries. Practice with 43×11 and 62×11.

Master a method to multiply big numbers by 11 using a left-right zero setup and digit addition with carries, with three-, four-, and five-digit examples to solve in seconds.

Master a quick multiplication trick for 25 by factoring out four. Replace four times 25 with 100 and multiply the remaining factor by 100 for fast mental results.

Master fast multiplication by 125 with the eight times 125 equals 1000 trick, factorizing numbers into two and eight to replace eight times 125 with 1000 for quick results.

Explore a quick two-digit by 99 trick: subtract one to form the first two digits, then subtract that from 99 for the last two digits, giving a four-digit product.

Learn a two-part trick to multiply a three-digit number by 99: subtract the hundreds digit plus one, compute 100 minus the last two digits, then join the parts.

Multiply a four-digit number by 99 by splitting into a and b, with part one as the number minus a plus one and part two as 100 minus b.

Master fast mental math by multiplying numbers by 999 using the given number minus one and subtracting from 999, with two-digit and three-digit examples and practice for upcoming four-digit cases.

learn a two-part trick to multiply a four-digit number by 999: subtract thousands digit plus one from the number, then 1000 minus the last three digits, as shown with 4217.

Master the 111 multiplication trick using digit sums and carries. See examples on 482, 756, and 89 with the 1-2-3-2-1 pattern, practicing two- and three-digit numbers.

Learn a fast trick to multiply by 1111 using the 1234321 pattern, with digit-sum steps and carries demonstrated on 3824, 785, and 56, plus practice guidance.

Learn a quick multiplication trick for numbers with unit digits summing to ten and identical remaining digits. Multiply the units, then the remaining and next digits to reveal the product.

Learn a multiplication trick for numbers where the tens digits sum to ten and the units digits match, then multiply the units, multiply the tens, and add the common unit.

Master the base method of multiplication using base 100, with three types and step-by-step tricks. Practice the three types with examples like 108×112 and 109×93, applying cross addition.

Master the base 1000 multiplication trick for numbers near 1000, covering three types with cross addition or subtraction and producing fast, accurate mental math products.

Learn a base ten multiplication trick for numbers above ten, using cross addition and digit placement in the right and left columns, illustrated by 18 × 19.

Master base-based mental multiplication from 200 to 500 using cross operations and left-hand column methods. Apply it to examples near these bases to compute the final result quickly.

Learn rapid multiplication using the base method from mental math and vedic math, applying bases 600 to 900 to perform cross-subtractions and base-based products.

learn the multiplication trick using bases 2000 to 5000, applying the base 1000 method with cross additions and adjusted left-hand products to compute near-base products quickly.

Master fast multiplication tricks with base methods from 6000 to 9000, using cross addition and left-side product tricks to compute large numbers quickly.

Master multiplication using base methods with bases 20, 30, 40, and 50 to compute products quickly. Practice cross additions, base adjustments, and handling minus signs to speed up mental math.

Learn fast two-digit multiplication near bases from 60 to 90 using the base method, with cross subtraction and base-tens multiplications, building on the base ten video approach.

Master two-digit by two-digit multiplication using vertical and horizontal tricks for general numbers, including cross-multiplication and w-pattern methods with practical examples.

Learn three digit by three digit multiplication tricks using a right-hand diagram, cross signs and asterisk, and carry methods to speed mental math with guided practice.

Learn a left-to-right vertical addition method that minimizes carries, speeding mental math with multi-digit examples and practice problems.

Master the horizontal addition easy method for adding numbers written side by side, starting from the thousands place and applying two-digit sum carry.

Learn a quick trick to add two-digit numbers with interchanged digits by summing the digits and multiplying the sum by 11, with examples.

Master a time-saving subtraction trick for powers of ten and their multiples by subtracting the last digit from ten, the rest from nine, with no borrowing.

Apply the vinculum subtraction trick using bars to simplify borrowings and carries forwards, turning examples like 427-182 into quick, accurate results.

Learn the dot method and friend method for subtraction, using ten-pair friends to avoid borrowings, apply dot as plus one, and work through practical examples.

Master the division by five trick: double the number and divide by ten, cancel zeros, and answer in seconds. Practice examples demonstrate verbal calculation and prep for division by 25.

Learn a fast division trick for 25 by splitting numbers into hundreds plus remainder, multiplying the hundreds digit by four, and combining with the remainder for the final result, verbally.

Master a quick mental trick to divide by 125 by splitting numbers into thousands and remainder, then multiply the thousands digit by eight.

Learn a quick decimal conversion for fractions with denominator five by doubling the number and placing the decimal point one place from the right, handling carries with a digit-by-digit method.

Learn a quick decimal conversion trick for fractions with denominators 50 and 500 by doubling the numerator and shifting the decimal point, enabling rapid mental math.

Explore a quick decimal conversion trick for fractions with denominators 125 or 1250: multiply the numerator by eight and shift the decimal point.

Master general decimal conversion by approximation method without a calculator. Round numerator and denominator, compare their ratio, and practice examples to achieve close decimals.

Uncover a fast fraction addition trick for patterns with equal numerators, constant gaps in denominators, and repeating numbers, then add numerators and multiply rest to get the answer in seconds.

Learn a pattern-based trick for adding fractions with identical numerators, a constant denominator gap, and repeated terms; copy the numerator and subtract the first and last denominators for a sum.

Discover a time-saving trick for adding multiple fractions with equal numerators and repeating denominator patterns; apply pattern recognition, subtraction of selected terms, and factorization to simplify quickly.

Learn a fast fraction addition trick for pattern 4, where numerators equal the gaps in the denominator, and use the start and nth terms to solve.

Master a mental math trick for adding fractions quickly with the pattern method from Vedic Math; practice step by step to obtain results like 23/14 and 19/31, including minus signs.

Learn a time-saving trick to add multiple fractions with varying whole numbers by a bottom-up process of multiplying denominators and adding previous results, including minus signs.