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Playlist: Math - How Many Ways

How Many Ways: Add to 170

Four blanks, ten digits, one target. Students hunt for every pair of two-digit numbers that adds to 170 without repeating a digit, then work out why there are only four.

How Many Ways: Add to 50

Fill in the blanks so two numbers add to exactly 50, using each digit only once. Then find the sneaky ways that start with a zero.

How Many Ways: Divide to 5

Fill in the blanks so the division equals exactly 5, using each digit only once. Then change the 5 to a 6 and watch most of the solutions disappear.

How Many Ways: Times Equals Minus

How many different ways can you make this math statement true using only the digits one through nine?