Snowball has 35 cheese slices, Mr. Albie takes away 15 slices. How many slices of cheese are left with Snowball?
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Solution
Number of cheese slices with Snowball = 35
Number of slices Mr. Albie takes away = 15
15 = 1 Ten and 5 Ones
Number of cheese slices left with Snowball = 35 − 15
We count backward by using the number line to find the answer.
Therefore, Snowball is left with 20 cheese slices.