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2 questions · timed · auto-graded

Question 11 Mark
        $1 \times 8 + 1 = 9$
      $12 \times 8 + 2 = 98$
    $123 \times 8 + 3 = 987$
  $1234 \times 8 + 4 =$ _____
____ $\times 8 +$ ____ $=$ _____
Answer
$1234 \times 8 + 4 = 9876, 12345 \times 8 + 5 = 98765$
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Question 21 Mark
            $9 + 1 = 10 $
          $99 + 1 = 100$
        $999 + 1 = 1000$
      $9999 + 1 = 10000$
$99999 +$ ____ $=$ _______
Answer
$99999 + 1 = 100000$
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