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Yohaku Puzzles

Fill in the blank spaces so that the cells give the sum or the product shown in each row and column.

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This is level 5: multiplication with consecutive numbers. You will be awarded a trophy if you get at least 5 of the puzzles correct and you do this activity online.

1
20
42
28 30 ×

Use four consecutive numbers

2
42
40
56 30 ×

Use four consecutive numbers

3
110
156
132 130 ×

Use four consecutive numbers

4
182
132
168 143 ×

Use four consecutive numbers

5
960
952
1088 840 ×

Use four consecutive even numbers

6
960
1224
1088 1080 ×

Use four consecutive even numbers

7
899
1155
1015 1023 ×

Use four consecutive odd numbers

8
1443
1155
1365 1221 ×

Use four consecutive odd numbers

Check

This is Yohaku Puzzles level 5. You can also try:
Level 1 Level 2 Level 3 Level 4 Level 6

Instructions

Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help.

When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file.

Why am I learning this?

Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician?

Comment recorded on the 19 November 'Starter of the Day' page by Lesley Sewell, Ysgol Aberconwy, Wales:

"A Maths colleague introduced me to your web site and I love to use it. The questions are so varied I can use them with all of my classes, I even let year 13 have a go at some of them. I like being able to access Starters for the whole month so I can use favourites with classes I see at different times of the week. Thanks."

Comment recorded on the 14 September 'Starter of the Day' page by Trish Bailey, Kingstone School:

"This is a great memory aid which could be used for formulae or key facts etc - in any subject area. The PICTURE is such an aid to remembering where each number or group of numbers is - my pupils love it!
Thanks"

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Scan the QR code below to visit the online version of this activity.

This is a QR Code

https://www.Transum.org/go/?Num=563

Description of Levels

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Set 1 - Addition with no restrictions

Set 2 - Addition with only consecutive numbers

Set 3 - Addition with multiples, primes and factors

Set 4 - Multiplication with no restrictions

Set 5 - Multiplication with consecutive numbers

Set 6 - Multiplication with multiples, primes and factors

3 by 3 Puzzles - Similar puzzles but a little more challenging.

4 by 4 Puzzles - Similar puzzles but a lot more challenging.

More Puzzles - A huge collection of mathematical puzzles for you to enjoy.

Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

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Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

Log in Sign up

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