<ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an  </li></ul><ul><li>empty tin. On Day 1, ...
<ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an  </li></ul><ul><li>empty tin. On Day 1, ...
<ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an  </li></ul><ul><li>empty tin. On Day 1, ...
<ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an  </li></ul><ul><li>empty tin. On Day 1, ...
<ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an  </li></ul><ul><li>empty tin. On Day 1, ...
<ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an  </li></ul><ul><li>empty tin. On Day 1, ...
<ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an  </li></ul><ul><li>empty tin. On Day 1, ...
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Q6

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Q6

  1. 1. <ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an </li></ul><ul><li>empty tin. On Day 1, he put 1 twenty-cent coin into the tin. From Day 2 </li></ul><ul><li>onwards, he put 2 more twenty-cent coins into the tin than the day before. </li></ul><ul><li>The table below shows the number of twenty-cent coins that he put into </li></ul><ul><li>the tin each day and the total number of coins in the tin at the end of the </li></ul><ul><li>day for the first five days. </li></ul><ul><li>By the end of which day would there be a total of $320 in the tin? </li></ul>© mathsheuristics  (1 x 1) 1
  2. 2. <ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an </li></ul><ul><li>empty tin. On Day 1, he put 1 twenty-cent coin into the tin. From Day 2 </li></ul><ul><li>onwards, he put 2 more twenty-cent coins into the tin than the day before. </li></ul><ul><li>The table below shows the number of twenty-cent coins that he put into </li></ul><ul><li>the tin each day and the total number of coins in the tin at the end of the </li></ul><ul><li>day for the first five days. </li></ul><ul><li>By the end of which day would there be a total of $320 in the tin? </li></ul>© mathsheuristics  (1 x 1) (2 x 2) 1
  3. 3. <ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an </li></ul><ul><li>empty tin. On Day 1, he put 1 twenty-cent coin into the tin. From Day 2 </li></ul><ul><li>onwards, he put 2 more twenty-cent coins into the tin than the day before. </li></ul><ul><li>The table below shows the number of twenty-cent coins that he put into </li></ul><ul><li>the tin each day and the total number of coins in the tin at the end of the </li></ul><ul><li>day for the first five days. </li></ul><ul><li>By the end of which day would there be a total of $320 in the tin? </li></ul>© mathsheuristics  (1 x 1) (2 x 2) (3 x 3) 1
  4. 4. <ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an </li></ul><ul><li>empty tin. On Day 1, he put 1 twenty-cent coin into the tin. From Day 2 </li></ul><ul><li>onwards, he put 2 more twenty-cent coins into the tin than the day before. </li></ul><ul><li>The table below shows the number of twenty-cent coins that he put into </li></ul><ul><li>the tin each day and the total number of coins in the tin at the end of the </li></ul><ul><li>day for the first five days. </li></ul><ul><li>By the end of which day would there be a total of $320 in the tin? </li></ul>© mathsheuristics  (1 x 1) (2 x 2) (3 x 3) (4 x 4) 1
  5. 5. <ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an </li></ul><ul><li>empty tin. On Day 1, he put 1 twenty-cent coin into the tin. From Day 2 </li></ul><ul><li>onwards, he put 2 more twenty-cent coins into the tin than the day before. </li></ul><ul><li>The table below shows the number of twenty-cent coins that he put into </li></ul><ul><li>the tin each day and the total number of coins in the tin at the end of the </li></ul><ul><li>day for the first five days. </li></ul><ul><li>By the end of which day would there be a total of $320 in the tin? </li></ul>© mathsheuristics  (1 x 1) (2 x 2) (3 x 3) (4 x 4) (5 x 5) 1
  6. 6. <ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an </li></ul><ul><li>empty tin. On Day 1, he put 1 twenty-cent coin into the tin. From Day 2 </li></ul><ul><li>onwards, he put 2 more twenty-cent coins into the tin than the day before. </li></ul><ul><li>The table below shows the number of twenty-cent coins that he put into </li></ul><ul><li>the tin each day and the total number of coins in the tin at the end of the </li></ul><ul><li>day for the first five days. </li></ul><ul><li>By the end of which day would there be a total of $320 in the tin? </li></ul>© mathsheuristics  (1 x 1) (2 x 2) $320  32000 ÷ 20 = 1600 (3 x 3) (4 x 4) (5 x 5) 1 2
  7. 7. <ul><li>Ali started a daily saving plan by putting only twenty-cent coins into an </li></ul><ul><li>empty tin. On Day 1, he put 1 twenty-cent coin into the tin. From Day 2 </li></ul><ul><li>onwards, he put 2 more twenty-cent coins into the tin than the day before. </li></ul><ul><li>The table below shows the number of twenty-cent coins that he put into </li></ul><ul><li>the tin each day and the total number of coins in the tin at the end of the </li></ul><ul><li>day for the first five days. </li></ul><ul><li>By the end of which day would there be a total of $320 in the tin? </li></ul>© mathsheuristics  (1 x 1) (2 x 2) $320  32000 ÷ 20 = 1600 1600  40 x 40 Ans: Day 40 (3 x 3) (4 x 4) (5 x 5) 1 2

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