Q. Express the following rational numbers in the form qp,p,q are integers, q=0.(i) 6.46(ii) 0.136(iii) 3.146(iv) −5.12
Set Variable x: To convert a repeating decimal to a fraction, we let the repeating decimal be equal to a variable, say x. For example, if we have 6.46, we can write x=6.464646…
Multiply by Power of 10: Next, we multiply x by a power of 10 that matches the length of the repeating pattern to shift the decimal point to the right, just before the pattern starts repeating again. For 6.46, the repeating pattern is 46, which is two digits long, so we multiply by 102 (which is 100). We get 100x=646.464646…
Subtract to Eliminate Decimals: Now, we subtract the original x from this new equation to get rid of the repeating decimals. So, 100x−x=646.464646...−6.464646... This gives us 99x=640.
Solve for x: We then solve for x by dividing both sides of the equation by 99. So, x=99640. This fraction can be simplified if necessary.
Convert to Fraction: For 6.46, the simplified fraction is x=99640, which cannot be simplified further. So, the fraction form of 6.46 is 99640.
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136…
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136… Multiply x by 103 (which is 1000) because the repeating pattern 136 is three digits long. We get 1000x=136.136136…
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136… Multiply x by 103 (which is 1000) because the repeating pattern 136 is three digits long. We get 1000x=136.136136… Subtract the original x from this new equation: 1000x−x=136.136136…−0.136136… This gives us 999x=136.
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136… Multiply x by 103 (which is 1000) because the repeating pattern 136 is three digits long. We get 1000x=136.136136… Subtract the original x from this new equation: 1000x−x=136.136136…−0.136136… This gives us 999x=136. Solve for x by dividing both sides by x=0.136136136…1. So, x=0.136136136…2. This fraction cannot be simplified further. So, the fraction form of 0.136 is x=0.136136136…4.
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136… Multiply x by 103 (which is 1000) because the repeating pattern 136 is three digits long. We get 1000x=136.136136… Subtract the original x from this new equation: 1000x−x=136.136136…−0.136136… This gives us 999x=136. Solve for x by dividing both sides by x=0.136136136…1. So, x=0.136136136…2. This fraction cannot be simplified further. So, the fraction form of 0.136 is x=0.136136136…4. For x=0.136136136…5, let x=0.136136136…6
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136… Multiply x by 103 (which is 1000) because the repeating pattern 136 is three digits long. We get 1000x=136.136136… Subtract the original x from this new equation: 1000x−x=136.136136…−0.136136… This gives us 999x=136. Solve for x by dividing both sides by x=0.136136136…1. So, x=0.136136136…2. This fraction cannot be simplified further. So, the fraction form of 0.136 is x=0.136136136…4. For x=0.136136136…5, let x=0.136136136…6 Multiply x by 103 (which is 1000) because the repeating pattern x0 is three digits long. We get x1
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136… Multiply x by 103 (which is 1000) because the repeating pattern 136 is three digits long. We get 1000x=136.136136… Subtract the original x from this new equation: 1000x−x=136.136136…−0.136136… This gives us 999x=136. Solve for x by dividing both sides by x=0.136136136…1. So, x=0.136136136…2. This fraction cannot be simplified further. So, the fraction form of 0.136 is x=0.136136136…4. For x=0.136136136…5, let x=0.136136136…6 Multiply x by 103 (which is 1000) because the repeating pattern x0 is three digits long. We get x1 Subtract the original x from this new equation: x3 This gives us x4.
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136… Multiply x by 103 (which is 1000) because the repeating pattern 136 is three digits long. We get 1000x=136.136136… Subtract the original x from this new equation: 1000x−x=136.136136…−0.136136… This gives us 999x=136. Solve for x by dividing both sides by x=0.136136136…1. So, x=0.136136136…2. This fraction cannot be simplified further. So, the fraction form of 0.136 is x=0.136136136…4. For x=0.136136136…5, let x=0.136136136…6 Multiply x by 103 (which is 1000) because the repeating pattern x0 is three digits long. We get x1 Subtract the original x from this new equation: x3 This gives us x4. Solve for x by dividing both sides by x=0.136136136…1. So, x7. This fraction can be simplified by dividing both numerator and denominator by x8. So, x9.
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136… Multiply x by 103 (which is 1000) because the repeating pattern 136 is three digits long. We get 1000x=136.136136… Subtract the original x from this new equation: 1000x−x=136.136136…−0.136136… This gives us 999x=136. Solve for x by dividing both sides by x=0.136136136…1. So, x=0.136136136…2. This fraction cannot be simplified further. So, the fraction form of 0.136 is x=0.136136136…4. For x=0.136136136…5, let x=0.136136136…6 Multiply x by 103 (which is 1000) because the repeating pattern x0 is three digits long. We get x1 Subtract the original x from this new equation: x3 This gives us x4. Solve for x by dividing both sides by x=0.136136136…1. So, x7. This fraction can be simplified by dividing both numerator and denominator by x8. So, x9. For 1030, let 1031
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136… Multiply x by 103 (which is 1000) because the repeating pattern 136 is three digits long. We get 1000x=136.136136… Subtract the original x from this new equation: 1000x−x=136.136136…−0.136136… This gives us 999x=136. Solve for x by dividing both sides by x=0.136136136…1. So, x=0.136136136…2. This fraction cannot be simplified further. So, the fraction form of 0.136 is x=0.136136136…4. For x=0.136136136…5, let x=0.136136136…6 Multiply x by 103 (which is 1000) because the repeating pattern x0 is three digits long. We get x1 Subtract the original x from this new equation: x3 This gives us x4. Solve for x by dividing both sides by x=0.136136136…1. So, x7. This fraction can be simplified by dividing both numerator and denominator by x8. So, x9. For 1030, let 1031 Multiply x by 1033 (which is 1034) because the repeating pattern 1035 is two digits long. We get 1036
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136… Multiply x by 103 (which is 1000) because the repeating pattern 136 is three digits long. We get 1000x=136.136136… Subtract the original x from this new equation: 1000x−x=136.136136…−0.136136… This gives us 999x=136. Solve for x by dividing both sides by x=0.136136136…1. So, x=0.136136136…2. This fraction cannot be simplified further. So, the fraction form of 0.136 is x=0.136136136…4. For x=0.136136136…5, let x=0.136136136…6 Multiply x by 103 (which is 1000) because the repeating pattern x0 is three digits long. We get x1 Subtract the original x from this new equation: x3 This gives us x4. Solve for x by dividing both sides by x=0.136136136…1. So, x7. This fraction can be simplified by dividing both numerator and denominator by x8. So, x9. For 1030, let 1031 Multiply x by 1033 (which is 1034) because the repeating pattern 1035 is two digits long. We get 1036 Subtract the original x from this new equation: 1038 This gives us 1039.
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136… Multiply x by 103 (which is 1000) because the repeating pattern 136 is three digits long. We get 1000x=136.136136… Subtract the original x from this new equation: 1000x−x=136.136136…−0.136136… This gives us 999x=136. Solve for x by dividing both sides by x=0.136136136…1. So, x=0.136136136…2. This fraction cannot be simplified further. So, the fraction form of 0.136 is x=0.136136136…4. For x=0.136136136…5, let x=0.136136136…6 Multiply x by 103 (which is 1000) because the repeating pattern x0 is three digits long. We get x1 Subtract the original x from this new equation: x3 This gives us x4. Solve for x by dividing both sides by x=0.136136136…1. So, x7. This fraction can be simplified by dividing both numerator and denominator by x8. So, x9. For 1030, let 1031 Multiply x by 1033 (which is 1034) because the repeating pattern 1035 is two digits long. We get 1036 Subtract the original x from this new equation: 1038 This gives us 1039. Solve for x by dividing both sides by 10001. So, 10002. This fraction can be simplified by dividing both numerator and denominator by 10003. So, 10004.
Repeat for Other Decimals: We repeat the process for 0.136. Let x=0.136136136… Multiply x by 103 (which is 1000) because the repeating pattern 136 is three digits long. We get 1000x=136.136136… Subtract the original x from this new equation: 1000x−x=136.136136…−0.136136… This gives us 999x=136. Solve for x by dividing both sides by x=0.136136136…1. So, x=0.136136136…2. This fraction cannot be simplified further. So, the fraction form of 0.136 is x=0.136136136…4. For x=0.136136136…5, let x=0.136136136…6 Multiply x by 103 (which is 1000) because the repeating pattern x0 is three digits long. We get x1 Subtract the original x from this new equation: x3 This gives us x4. Solve for x by dividing both sides by x=0.136136136…1. So, x7. This fraction can be simplified by dividing both numerator and denominator by x8. So, x9. For 1030, let 1031 Multiply x by 1033 (which is 1034) because the repeating pattern 1035 is two digits long. We get 1036 Subtract the original x from this new equation: 1038 This gives us 1039. Solve for x by dividing both sides by 10001. So, 10002. This fraction can be simplified by dividing both numerator and denominator by 10003. So, 10004. We have now converted all the given repeating decimals to fractions. The final answers are: (i) 10005 (ii) 10006 (iii) 10007 (iv) 10008