~Serious Subtraction 2~

Serious Subtraction

We are learning to solve subtraction problems using whole and decimal numbers.

Times Table Practice:

3 x 3 =9 5 x 5 =25 8 x 7 = 56 12 x 10 = 120 4 x 6 = 24 5 x 7 = 35 2 x 4 = 8 3 x 8 = 24 9 x 8 = 72 4 x 7 = 28 9 x 7 = 63

Show your working for the following problems, either on here or in your books

Your brother gives you $125 to spend on lollies. If you spend $65 how much money would you have left over? The strategy I used was add not subtract. 65 + 60 = 120, Answer = $60

Zaeeda has bought Tha Zin a new puppy. She has $500 in her bank account as she heads to the shops.

She first buys a dog bed for $60. How much money does she have left? 60 + 440 = 500, she has $440 left.

She then buys a bowl for $25. How much does she have left? 440 - 25 = 415, she now has $25

Then she buys 3 chew toys. Each toy costs $3.50. How much does she have left? $3.50 x 3 = $10.50, 10.50 - 415 = $404.50

Finally she buys a diamond collar for the dog which costs $154.50. How much is left in her account at the end of the day? 404.50 - 154.50 = $250

Kalani’s python has become ill and needs to go to the vets. He has $100 in his wallet.

The cost of the vet visit is $65.50. How much money is left in Kalani’s wallet? 65.50 + 4.50 = 70, 70 + 30 = 100, altogether 34.50 is what is left in Kalani’s wallet.

AJ is also at the vet with his rabbit. His rabbit has had expensive surgery. If AJ has $10.25 left in his bank account and he started with $525.80, how much did the surgery cost? 10.25 + 9.75 = 20, 20 + 505.80 = $525.80, meaning that the surgery costed $515.55

Zyla’s puppy is growing every month. He used to weigh 5.67 kg but he now weighs 6.34kg. How much weight has he put on? 5.67 + 0.33 = 6, 6 + 0.34 = 6.34, altogether 0.67 or also known as 670g