DAY 328:

The Main Challenge

. . . will get you thinking of the 5- and 7-times tables, plus some addition.

What is the total of the first SEVEN whole numbers that have a 5 or 7 as part of their number or are multiples of 5 or 7?

The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.

The 5th & 7th columns contain the following fourteen numbers:

5   8   9   11   14   18   24   25   28   32   44   50   66   84

Can you find four different numbers that have a sum of 100?

The Factors Challenge

Which of the following numbers are factors of 328?

2    3    4    5    6    7    8    9

The Mathematically Possible Challenge

Using 56 and 12 once each, with + – × ÷ available, which are the only THREE numbers it is possible to make from the list below?

11    22    33    44    55    66    77    88    99    110

#11TimesTable

The Target Challenge

Can you arrive at 328 by inserting 1, 2, 3, 4 and 5 into the gaps below?

  •  (◯²+◯²)×(◯+◯)×◯ = 328

Answers can be found here.

Click Paul Godding for details of online maths tuition.

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