Put your children's addition, subtraction and place value knowledge to the test with this Year 4 Add and Subtract 1s, 10s, 100s and 1000s Disucssion Problem. This resource encourages children to explore everything they have learnt in your lesson and apply it to two in-depth problem-solving questions. With two different questions and multiple outcomes available, these questions can be used over and over again.

Our discussion problems are great for paired or small group work. Alternatively, they can be displayed on screen to encourage discussion and reasoning in your class, or you could use this as a homework activity for competent mathematicians. An example answer has been included for children to compare their outcomes to. An ideal opportunity to address any misconceptions.