Question

The given abacus represents the number of lollipops Su is left with. If 42 were given away, how many groups of 10 and how many single lollipops did Su have at first?

• A. 4 groups of Tens and 3 single lollipops
  
• B. 5 groups of Tens and 9 single lollipops
• C. 8 groups of Tens and 5 single lollipops
  
• D. 9 groups of Tens and 5 single lollipops
  

Answer 1

The correct option is D 9 groups of Tens and 5 single lollipops


Say: Let's find the number of lollipops Su had at first.

Steps:
$\bullet$ The given abacus has 5 beads over “T” representing 5 Tens and 3 beads over “O” representing 3 Ones.
$\bullet$ 5 Tens and 3 Ones = 53.
$\bullet$ Su has 42 lollipops remaining.
$\bullet$ To find the number of lollipops she had at first, we will add the number of lollipops given away and the number of lollipops remaining with her.
$\bullet$ So, $53+42=95=9$ Tens and 5 Ones.
$\bullet$ That means, she had 9 groups of Tens and 5 single lollipops at first.
$\bullet$ Hence, Option D is correct.