DAY 330:

Today’s Challenge

. . . is a number trail involving ten arithmetical steps. You can time yourself, but more importantly be careful with your calculations.  No calculators please!

Start with the number 40, then:

  • multiply by 4
  • +10%
  • subtract 15
  • divide by seven
  • add nine
  • 1/2 of this
  • +87
  • double this
  • 96
  • ÷10

What is your final answer?

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 1st & 4th columns of the playing board contain the following fourteen numbers:

3    6    13    20    21    22    27    42    55    56    60    63    72    77

What is the product of the highest number and lowest number?

Make 330 Challenge

Can you arrive at 330 by inserting 3, 5, 10, 11 and 15 into the gaps below?

◯×◯×(◯–◯–◯) = 330

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

This entry was posted in 7puzzleblog.com. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *