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Home > Pre-Algebra calculators
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Educational Level
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Secondary school, High school and College |
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Program Purpose
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Provide step by step solutions of your problems using online calculators (online solvers)
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Problem Source
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Your textbook, etc |
1. Addition, Subtraction, Multiplication, Division of two numbers
1.1 Long Addition
1.2 Long Subtraction
1.3 Long Multiplication
1.4 Long Division
2. Lattice Multiplication
3. Numbers to Words Converter (Pronounce a number )
4. Words to Numbers Converter
5. Place Value
6. Factors and Prime factorization of a number
6.1 Prime factorization by Division method
6.2 Prime factorization using Factor tree method
6.3 Prime factorization using the Ladder method
6.4 Factors by Division method
6.5 Factors by Multiplication method
6.6 Factor Pairs
7. Multiples of a number
7.1 Find Multiple of 8 using Multiplication method
7.2 Find Multiple of 8 using Repeated addition method
7.3 Find the first 6 Multiple of 8
7.4 Find the sum of first 12 Multiple of 12
7.5 Find the average of first 12 Multiple of 12
7.6 Find Multiple of 7 that are less than or equal to 56
7.7 Find Multiple of 12 that are between 20 and 70
7.8 Find the smallest Multiple of 13 greater than 1000
7.9 Find the largest Multiple of 7 less than 1000
7.10 How many Multiple of 7 between 100 and 1000
7.11 Is 104 a multiple of 8
8. HCF and LCM of numbers
8.1 HCF by Listing Method
8.2 HCF by Prime Factorization Method
8.3 HCF by Division Method
8.4 HCF by Repeated Division Method
8.5 LCM by Listing Method
8.6 LCM by Prime Factorization Method
8.7 LCM by Division Method
8.8 LCD
8.9 Common Factor by Listing Method
9. Prime numbers
9.1 Is 31 a prime number
9.2 Which of the following is a prime number 13,48,49,23,45,47
9.3 Which of the following is a composite number 13,19,22,31
9.4 First 1000 prime numbers
9.5 5th prime number
9.6 Prime numbers from 1 to 1000
9.7 Greatest prime number between 1 and 100
9.8 What is the next 2 prime number after 37
9.9 What is the previous 2 prime number before 37
9.10 What is the largest 2 digit prime number
9.11 What is the smallest 4 digit prime number
9.12 Express 21 as the sum of three prime numbers
9.13 are 25 and 27 co-prime numbers
9.14 Find all co-prime numbers from 1 to 100
9.15 are 11 and 13 twin primes
9.16 Find all twin prime numbers between 1 to 100
10. Divisibility test
11. Order of Operations (PEMDAS)
12. Leap Year
13. Decimal number
1.1 Decimal to Fraction
1.2 Fraction to Decimal
1.3 Decimal to Percentage
1.4 Percentage to Decimal
1.5 Decimal to Standard form
1.6 Standard form to Decimal form
2. Expanded form of a number
3. Succeeding number
4. Preceding number
5. Even or odd number
6. Comparing Numbers (Greater Than Or Less Than)
7. Minimum number
8. Maximum number
9. Ascending, Descending order of numbers
10. Rounding Numbers
11. Classifying numbers (Rational,Irrational,Real,Natural,Integer)
12. Terminating or non terminating decimal expansion
13. Additive inverse
14. Multiplicative inverse
15. Opposite number
16. Reciprocal number
17. Absolute value of a number
18. +, -, *, / of numbers
19. Model +, - of numbers
20. Simplify expression
14. Fraction
1. Numerator and Denominator Fractions
2. Proper and Improper Fractions
3. Like and Unlike fractions
4. Model Fractions (Visual Fractions)
5. Simplify Fraction
6. Equivalent Fractions
7. How many eighths are equivalent to 1/2
8. Fraction to Decimal (Mixed Number to Decimal)
9. Decimal to Fraction (Decimal to Mixed Number)
10. Fraction to Percentage (Mixed Number to Percentage)
11. Improper fraction to Mixed number
12. Mixed Number to Improper Fraction
13. Reciprocal of a fraction
14. LCD of fractions
15. Convert unlike fraction to like fraction
16. Comparing fractions
17. Ascending and descending order of fractions
18. Add, subtract, multiply and divide of Fractions
19. Add, subtract, multiply and divide of Mixed numbers
20. Visual Model for Adding, Subtracting of Fractions
21. Simplify fraction expression
15. Scientific notation
1. Convert Scientific notation to Decimal notation
2. Convert Decimal notation to Scientific notation
3. Add, subtract, multiply and divide of Scientific notation numbers
16.1 Powers
1. Square of a number
2. Cube of a number
3. Nth Power of a number
16.2 Radicals
4. Square root of a number using prime factorization method
5. Cube root of a number using prime factorization method
6. Nth root of a number using prime factorization method
7. Square root of a number using long division method
8. Cube root of a number using long division method
9. Find the smallest number which must be Added to 180 to make it perfect Square
10. Find Least number of 4 digits which is a perfect Square
17.1 Find next number in the sequence (1. 3, 6, 18, 72, ___)
17.2 Find wrong number in the sequence (1. 3, 6, ?, 72, 360)
17.3 Find missing number in the sequence (1. 3, 6, 17, 72, 360)
17.4 Alphabate series (1. BDF,CFI,DHL,? 2. A,E,I,O,?)
17.5 Missing Letter Series (1. ??aba??ba?ab 2. ab???b?bbaa?)
18. Coding Decoding
19. Unit Conversion
1. Length Conversion
2. Speed Conversion
3. Power Conversion
4. Temperature Conversion
5. Mass Conversion
6. Volume Conversion
7. Money Conversion
8. Time Conversion
9. Degree Conversion
10. Angle to Degree Conversion
1.
KM to M, KM to DM, KM to CM, KM to MM, KM to MI, KM to YD, KM to FT, KM to IN, M to KM, M to DM, M to CM, M to MM, M to MI, M to YD, M to FT, M to IN, DM to KM, DM to M, DM to CM, DM to MM, DM to MI, DM to YD, DM to FT, DM to IN, CM to KM, CM to M, CM to DM, CM to MM, CM to MI, CM to YD, CM to FT, CM to IN, MM to KM, MM to M, MM to DM, MM to CM, MM to MI, MM to YD, MM to FT, MM to IN, MI to KM, MI to M, MI to DM, MI to CM, MI to MM, MI to YD, MI to FT, MI to IN, YD to KM, YD to M, YD to DM, YD to CM, YD to MM, YD to MI, YD to FT, YD to IN, FT to KM, FT to M, FT to DM, FT to CM, FT to MM, FT to MI, FT to YD, FT to IN, IN to KM, IN to M, IN to DM, IN to CM, IN to MM, IN to MI, IN to YD, IN to FT,
2.
KpH to MEpH, KpH to MEpS, KpH to MIpH, KpH to FpH, MEpH to KpH, MEpH to MEpS, MEpH to MIpH, MEpH to FpH, MEpS to KpH, MEpS to MEpH, MEpS to MIpH, MEpS to FpH, MIpH to KpH, MIpH to MEpH, MIpH to MEpS, MIpH to FpH, FpH to KpH, FpH to MEpH, FpH to MEpS, FpH to MIpH,
3.
H to W, H to JpS, W to H, W to JpS, JpS to H, JpS to W,
4.
C to F, C to K, F to C, F to K, K to C, K to F,
5.
KG to G, KG to MG, KG to MT, KG to ST, KG to P, KG to O, G to KG, G to MG, G to MT, G to ST, G to P, G to O, MG to KG, MG to G, MG to MT, MG to ST, MG to P, MG to O, MT to KG, MT to G, MT to MG, MT to ST, MT to P, MT to O, ST to KG, ST to G, ST to MG, ST to MT, ST to P, ST to O, P to KG, P to G, P to MG, P to MT, P to ST, P to O, O to KG, O to G, O to MG, O to MT, O to ST, O to P,
6.
GALLON to QUART, GALLON to PINT, GALLON to CUP, GALLON to FO, GALLON to CF, GALLON to CI, GALLON to L, GALLON to ML, QUART to GALLON, QUART to PINT, QUART to CUP, QUART to FO, QUART to CF, QUART to CI, QUART to L, QUART to ML, PINT to GALLON, PINT to QUART, PINT to CUP, PINT to FO, PINT to CF, PINT to CI, PINT to L, PINT to ML, CUP to GALLON, CUP to QUART, CUP to PINT, CUP to FO, CUP to CF, CUP to CI, CUP to L, CUP to ML, FO to GALLON, FO to QUART, FO to PINT, FO to CUP, FO to CF, FO to CI, FO to L, FO to ML, CF to GALLON, CF to QUART, CF to PINT, CF to CUP, CF to FO, CF to CI, CF to L, CF to ML, CI to GALLON, CI to QUART, CI to PINT, CI to CUP, CI to FO, CI to CF, CI to L, CI to ML, L to GALLON, L to QUART, L to PINT, L to CUP, L to FO, L to CF, L to CI, L to ML, ML to GALLON, ML to QUART, ML to PINT, ML to CUP, ML to FO, ML to CF, ML to CI, ML to L,
7.
R to P, P to R,
8.
SEC to MIN, SEC to HR, SEC to DAY, SEC to WK, SEC to MO, SEC to YR, MIN to SEC, MIN to HR, MIN to DAY, MIN to WK, MIN to MO, MIN to YR, HR to SEC, HR to MIN, HR to DAY, HR to WK, HR to MO, HR to YR, DAY to SEC, DAY to MIN, DAY to HR, DAY to WK, DAY to MO, DAY to YR, WK to SEC, WK to MIN, WK to HR, WK to DAY, WK to MO, WK to YR, MO to SEC, MO to MIN, MO to HR, MO to DAY, MO to WK, MO to YR, YR to SEC, YR to MIN, YR to HR, YR to DAY, YR to WK, YR to MO,
9.
DEG to RAD, RAD to DEG,
20. One Base to Other Base Conversion
1. Decimal to Binary
2. Decimal to Octal
3. Decimal to Hexadecimal
4. Binary to Decimal
5. Binary to Octal
6. Binary to Hexadecimal
7. Octal to Decimal
8. Octal to Binary
9. Octal to Hexadecimal
10. Hexadecimal to Decimal
11. Hexadecimal to Binary
12. Hexadecimal to Octal
13. Decimal to Other
14. Other to Decimal
15. Other to Other
21. Tables
1. Addition table / Chart
2. Multiplication table / Chart
3. Roman table
4. Factorial table
5. Number system conversion table
6. Square table
7. Cube table
8. Power table
9. Sin table
10. Cos table
11. Tan table
12. Sin, Cos, Tan table
13. Area formula
14. Volume formula
15. Factors of an equation formula
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