Solving word problems with unknown values

Maths

Addition and subtraction

Does this bar model show an addition or a subtraction problem?

Tia is looking after the neighbour's dogs. The adult dog eats 450 g more than the puppy. If the adult dog eats 875 g how much will the puppy eat?                            Does this question need addition or subtraction to answer it?

Mo walked up 216 steps but his Gran only made it up 120. How many more steps did Mo walk than his Gran?

Mo's Gran walked up 216 steps and then had a rest. Then she walked up the remaining 120. How many did she walk up in total?

Which question would this bar model help to answer?

Before the final rounds of races on sports day, the green team had 372 points. They ended up winning the competition with 518 points altogether. How many more points did they make in the final round?

We estimate when answering questions to...

We always need to use column addition or subtraction when answering word problems?

Class B won 456 house-points before Christmas. Class D won 106 more. How many did Class D win? Does this question require addition or subtraction to answer it?

Edinburgh castle sold 345 tickets for tours on Monday. On Tuesday it sold 109 less. How many tickets were sold on Tuesday?

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