This sum appears to be correct when read as words. It can also be correct if you substitute digits for letters. Each different letter stands for a different digit.

 F I V E - O N E F O U R

Can you find the substitutions which will make this word sum correct?

Can you make up a word sum or puzzle of your own?

## A Mathematics Lesson Starter Of The Day

Topics: Starter | Arithmetic

• Sue,
•
1489-239=1250
• Mr Sim's 2j Class, Elgin Academy
•
• Our class got three more sets of solutions!
3862 - 412 = 3450
5298 - 138 = 5160
2685 - 315 = 2370.
• Miss Teece's Class, MBHS
•
• 1054
-624
-----
5492
1698
-348
-----
1350
1674
-354
-----
1320
1859
-429
-----
1430
1678
-358
-----
1320
5692
-382
----
5310.
• Transum,
•
• Thanks very much for sharing your solutions. Have we found all possible solutions to this puzzle yet? Does anyone have an insight into a way to prove that we have found all possible solutions? What strategies did your pupils use to find the solutions they found?

Sorry, the answers only appear in these comments when you are logged in as a subscriber.
• Ms Keplinger, Australia
•
• Ms Keplinger's Year 5 class. GOLD COAST AUSTRALIA :)
We have found the following
ONE+ONE= TWO (143+143 = 286)by Francesca
FOUR + ONE = FIVE (5260+237=5497) by Jameel or (5370+321=5691) Ruby
EIGHT - FOUR = FOUR (15864-7932) by Jameel
TWO - ONE = ONE (864-432=432) by Natalie
TWO +TWO = FOUR (928+928) by Dorothy.

How did you use this starter? Can you suggest how teachers could present or develop this resource? Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.

Previous Day | This starter is for 13 August | Next Day

## Extension

 D O U B L E D O U B L E + T O I L T R O U B L E

Your access to the majority of the Transum resources continues to be free but you can help support the continued growth of the website by doing your Amazon shopping using the links on this page. Below is an Amazon link. As an Amazon Associate I earn a small amount from qualifying purchases which helps pay for the upkeep of this website.

Educational Technology on Amazon

 Teacher, do your students have access to computers such as tablets, iPads or Laptops?  This page was really designed for projection on a whiteboard but if you really want the students to have access to it here is a concise URL for a version of this page without the comments: Transum.org/go/?Start=August13 However it would be better to assign one of the student interactive activities below.

Here is the URL which will take them to a related student activity.

Transum.org/go/?to=4sum

Do you want more?

Do you need help?

Here is a Step by step guide for solving word sums along with other word sums for you to try.