A fraction is a way to represent a part of a whole, expressed as a ratio of two integers, where the numerator indicates how many parts are taken and the denominator indicates how many equal parts the whole is divided into. | Card: 2 / 22 |
To convert a decimal to a fraction, write the decimal as a fraction with a denominator of 1, then multiply the numerator and denominator by 10 for every digit after the decimal point. | Card: 4 / 22 |
To convert a percentage to a decimal, divide the percentage by 100. | Card: 6 / 22 |
Let the number be x. Then, 0.25x = 50. To find x, divide both sides by 0.25: x = 50 ÷ 0.25 = 200. | Card: 8 / 22 |
A fraction can be converted to a percentage by multiplying by 100. | Card: 10 / 22 |
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To simplify, multiply the numerators and denominators: | Card: 12 / 22 |
0.125 can be expressed as 125/1000. To simplify, divide both the numerator and denominator by 125: 125 ÷ 125 = 1 and 1000 ÷ 125 = 8. Thus, 0.125 = 1/8. | Card: 14 / 22 |
To find the percentage of a number, multiply the number by the percentage (as a decimal). For example, to find 30% of 200: 0.30 × 200 = 60. | Card: 16 / 22 |
Let the number be x. Then, 0.60x = 180. To find x, divide both sides by 0.60: x = 180 ÷ 0.60 = 300. | Card: 18 / 22 |
To find the common denominator, identify the least common multiple (LCM) of the two denominators. For example, for 1/3 and 1/4, the LCM of 3 and 4 is 12. Thus, the common denominator is 12. | Card: 20 / 22 |
If a product is discounted by 20% and the original price is 50, what is the sale price? | Card: 21 / 22 |
To find the sale price, first calculate the discount: 20% of 50 is 0.20 × 50 = 10. Then subtract the discount from the original price: 50 - 10 = 40. Thus, the sale price is 40. | Card: 22 / 22 |






