Or search by topic
There are 3 NRICH Mathematical resources connected to NC-WrittenMethods-R1-Y1, you may find related items under NC.
Broad Topics > NC > NC-WrittenMethods-R1-Y1In this calculation, the box represents a missing digit. What could the digit be? What would the solution be in each case?
Here are some short problems for you to try. Talk to your friends about how you work them out.
Using the cards 2, 4, 6, 8, +, - and =, what number statements can you make?