Explain that to solve the problem you first subtract the thousands numbers, then the hundreds numbers, tens numbers and ones values. Afterwards, discuss the different strategies of solving the problem 40,000 - 289. First ask the students how they would solve the problem and then show the strategies used by the children on the board. The students solve the next few problems on their own. Then show the story problem. Explain that you must first determine what kind of problem it is and what numbers you need to make the problem. Then you state the problem and solve it. Discuss the story problem about hair together and have the students solve the following problem on their own.
Check whether students can subtract from a ten-thousands number by asking the following question:
- What method do you use to solve this problem in steps? (60,000 - 893)