Y6 πŸ€·β€β™€οΈ Maths Riddles Answers πŸ€·β€β™€οΈ

Hi Year 6, I hope you are all safe and well. Firstly, well done to all of you for having a go. They were challenging but fun. I will be putting a blog up every week to keep your brain fun and alive.

As promised, here are the answers. I will leave you to self assess yourselves.

Riddle 1

The key to this math riddle is realizing that the one place must be zero.Β 888 + 88 + 8 + 8 + 8 = 1,000

Riddle 2.

One of the ‘fathers’ is also a grandfather. Therefore the other father is both a son and a father to the grandson.

In other words, the one father is both a son and a father.

Riddle 3.

The most common digit is ‘1.’

Riddle 4.

11 cartons total
7 large boxes (7 * 8 = 56 boxes)
4 small boxes (4 10 = 40 boxes
11 total cartons and 96 boxes

Riddle 5.

The key to solving this riddle is realizing that you have to take the rabbit over first and the switch the fox with the rabbit. See step 2.

Step 1

Take the rabbit to the other side.

ShoreOther Side
Carrots
Fox
Rabbit

Step 2

Go back and get the Fox and switch it with the Rabbit.
**The key here is that the carrots and the rabbit are not being left alone.

ShoreOther Side
Carrots
Rabbit
(Not left alone)
Fox

Step 3

Take the carrots across.

ShoreOther Side
RabbitFox
Carrots

Step 4

Go back and get the rabbit.

ShoreOther Side
Rabbit
Fox
Carrots


Riddle 6

Every farmer’s part is 1/3(45+75)=401/3(45+75)=40 sacks.
Charlie paid $1400$1400 for 4040 sacks, then 1 sack costs $1400/40=$35/sack$1400/40=$35/sack.

Adam got $35βˆ—(45βˆ’40)=35βˆ—5=$175$35βˆ—(45βˆ’40)=35βˆ—5=$175.
Ben got $35βˆ—(75βˆ’40)=35βˆ—35=$1225$35βˆ—(75βˆ’40)=35βˆ—35=$1225.
Answer: Ben $1225$1225, Adam $175

Riddle 7

Look at how many closed areas there are.

  • 9999 has 4 closed areas (the top of the ‘9’).
  • 8888 has 8 closed areas, the top and bottom parts of the 8 and there are no other digits.
  • 1816 has 3 closed areas, (top and bottom of 8 and bottom of 6, and it has 2 other digits (3 * 2 = 5)).
  • 1212 has 0 closed areas, (0 * 4 = 0)
  • So 1919 will have = 4 (2 closed areas and 2 other digits)

I hope you had fun. :)

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