Problem Solving and Inverse Operations Tuesday 24th August

Answer the following questions and show your working out:
a) What is the sum of 606 and 24?

b) What is the difference between 630 and 606?

c) Would you be able to use inverse operations to check the answer to this particular question?
NO

a) What is the sum of 5800, 490 and 22?

b) How could you use the inverse operation to check your answer?

a) Add together 62349, 78, 4521 and 370.

b) How could you use the inverse operation to check your answer?

Create your own addition number sentence using 3 numbers (you can use 2 digit, 3 digit, 4 digit or even 5 digit numbers) and write its inverse operation.

PROBLEM SOLVING
You will get one mark for the answer and working out and another if you do the inverse operation.

At the fruit market, 583 apples and 79 oranges were sold. How many pieces of fruit were sold all together? Remember to write your working out and check your answer by writing the inverse operation.

Working out and answer
Check using inverse operation

6. Luke watched 280 minutes of television on Saturday and 345 minutes on Sunday. How many minutes of television did Luke watch all together? Give your answer in minutes. Remember to write your working out and check your answer by writing the inverse operation.

Working out and answer
Check using inverse operation

7. A bookshop kept 3096 books in room A, 2510 in room B and 289 in room C. How many books were in all three rooms? Remember to write your working out and check your answer by writing the inverse operation.

Working out and answer
Check using inverse operation

8. Emily spent $9567 renovating her kitchen, $7498 renovating her bathroom and $399 on furniture. How much did she spend? Remember to write your working out and check your answer by writing the inverse operation.

Working out and answer
Check using inverse operation

9. Challenge question (optional):
Using the numbers 1, 2, 3, 4, 5, 6, 7, 8, how many different ways can the digits be arranged to make 2 numbers whose sum is 9999?