Noз. Выптолните действия: \( \begin{array}{ll}\text { а) } 12 \frac{7}{20}+7 \frac{3}{20}-4 ; & \text { 2) } 24-8 \frac{7}{11}-4 \frac{9}{11} \\ \begin{array}{ll}\text { 6) } 71 \frac{8}{13}+8 \frac{12}{13}+\frac{9}{13} ; & \text { d) }\left(10-6 \frac{15}{28}\right)+\left(2 \frac{15}{28}-1 \frac{17}{28}\right) \\ \text { в) } 17 \frac{21}{28}-9 \frac{12}{28}+\frac{1}{28} ; & \text { e) } 5 \frac{16}{24}-\left(2 \frac{15}{24}-1 \frac{17}{24}\right)+17 \frac{5}{24}\end{array}\end{array} \$ \begin{array}{ll} & \end{array} \)

If \( 3^2 \) is calculated, what is the result?

With your teacher: The first term of a arithmetic sequence is 14 . The \( 7^{\text {th }} \) term is 50 . Find: (a) The common difference ' \( d \) '. (b) The rule for the sequence. The \( 6^{\text {th }} \) term of an arithmetic sequence is 123 . The \( 11^{\text {th }} \) term is 98 . Find; (a) The common difference ' \( d \) ' and first term ' \( a \) '. The rule for the sequence. (b) (c) \( 16^{\text {th }} \) term.

If the sum is 18 and you turned over a 7 , how would you find the new sum? Share your strategy.

What percentage is 36 of 82 ?

Example 3 If a student saves Ghe 1 on the first day, Ghe 2 on the second day, Ghe 3 on the thit day and so on. What will be his total saving in 365 days?