4/10 + 9/20 =8/20 + 9/20 =
17/20
⁹/₁₀ + ¹¹/₂₀ =¹⁸/₂₀ + ¹¹/₂₀ =²⁹/₂₀ or 1.45
It is one and nine twentieths.
Three tenths plus one twentieth can be calculated by finding a common denominator. The common denominator for 10 and 20 is 20. Converting three tenths to twentieths gives us six twentieths, so adding one twentieth results in six twentieths plus one twentieth, which equals seven twentieths. Therefore, three tenths plus one twentieth equals seven twentieths.
7 6/10
nine twentieths
⁹/₁₀ + ¹¹/₂₀ =¹⁸/₂₀ + ¹¹/₂₀ =²⁹/₂₀ or 1.45
It is one and nine twentieths.
four fifths is equal to eight tents, so three tenths plus eight tenths is eleven tenths, or one and one tenth
Three tenths plus one twentieth can be calculated by finding a common denominator. The common denominator for 10 and 20 is 20. Converting three tenths to twentieths gives us six twentieths, so adding one twentieth results in six twentieths plus one twentieth, which equals seven twentieths. Therefore, three tenths plus one twentieth equals seven twentieths.
nine tenths
7 6/10
nine twentieths
3.8 + 2.9 = 6.7
The sum of (eight and nine tenths) plus (nine and eight tenths) is (eighteen and seven tenths). 8.9 + 9.8 = 18.7
Thirteen tenths
6 and 3 40ths.
To solve this, you need to find a common denominator for the fractions. The common denominator for 30, 20, and 10 is 60. So, eleven thirtieths can be written as 22 sixtieths, nine twentieths as 27 sixtieths, and three tenths as 18 sixtieths. Adding them together yields 67 sixtieths, which can be simplified to 1 and 7/60.