Soilving Division problems using Known Facts as a Strategy! Josh and Damon.

Problem:

It is David’s birthday today. He brings a bag with 128 lollies to school. He divides these lollies evenly between himself and 7 other friends. How many lollies did everyone get ?

Steps:

Step 1: Read the problem.

Step 2: Put it into a maths equation. 128 ÷ 8 =

Step 3: Choose a strategy to solve the problem. Known Facts.

Step 4: Solve the problem.

I know that:

128 ÷ 8 =

10 x 8 = 80 (48 Left)

6 x 8 = 48 (0 Left)

10 + 6 = 16

Learning tip: Remember to add the multiples of 8 to get your answer!

Solving Division Problems using Halving and Halving as a Strategy! - Sheetal and Christine.

Problem: 

Its David’s birthday today. He brings a bag with 128 lollies to school. He divides them evenly between himself and 7 other friends. How many lollies did everyone get?

Step 1:  Read the question. 

Step 2:  Put it into a maths equation: 128 ÷ 8 = _____

Step 3 :  Choose a strategy: Halving and Halving

Step 4: Solve the equation

128 ÷ 8 = 

(Halve 28 to 64) ÷ (Halve 8 to 4) =  

So 64 ÷ 4 =

(Halve 64 to 32) ÷ (Halve 4 to 2) =

So 32 ÷ 2 = 16

Learning Tip: Keep on halving until the equation becomes a basic fact.

Solving Addition Problems using Place value as a Strategy! Rubana and Scott.

Problem:

Joe has $18.88 when he goes to Botany. He gets another $8.25 from his Dad. How much money does he have all together?

Step 1: Read the problem.

Step 2: Put it into a Maths Equation: $18.88 + $8.25 =

Step 3: Choose a strategy: Place Value.

Step 4: Solve the problem:

 18.88 + 8 = $26.88

 26.88 + 0.25 = $27.13                     

 My answer is $27.13

Learning Tip: Always hold the big numbers!

Solve Subtraction Problems using Reversibility as a Strategy! - Ryan and Aidan.

Problem:

Elle takes $37.36 to Silvia Park. She buys a new pair of skinny jeans for $18.90. How much money does she have left?

Step 1: Read the problem.

Step 2: Put the problem into a maths equation. 37.36 - 18.90 =

Step 3: Choose a strategy. (Reversibility) So 18.90 + _____ = 37.36

Step 4: Solve the problem.

18.90 + 1.10 = 20 

20 + 17 = 37

37 + 0.36 = 37.36

So 1.10 + 17 + 0.36 = 18.46 

Learning Tip: Remember to add the correct numbers at the end to get your answer.

Solving Multiplication Problems using Splitting Factors as a Strategy! Louise and Cassie.

Problem:

Brad saves $3.25 each week, for 16 weeks. How much money did he save?

Step1: Read the problem.

Step 2: Put it into a maths equation: 16 x 3.25 =

Step 3: Choose a Strategy: Splitting Factors.

Step 4: Solve the problem.

    16 x 3.25=

    16 x 3= 48

    16 x 0.25= 4

So 48 + 4 = 52

Learning Tip: Save/ Remember all the big numbers in your head so you can add them at the end to get the answer.

Solving Multiplication Problems using Doubling and Halving as a Strategy! Shanay and Samantha.

Problem:

There are 5 donuts in a pack. In the the box are 18 packs. How many donuts are there altogether?

Step 1: Read the problem

Step 2: Put it in a maths equation: 5 x 18 =

Step 3: Choose strategy - Doubling and Halving

Step 4: Solve it: 

Double the 5 to 10, and halve the 18 to 9

So 10 x 9 = 90 

Learning Tip: Always use doubling and halving when you multiply with 5 and 20. Using this strategy will always ensure you multiply by 10. That is easy.

Solving Multiplication Problems using Splitting Factors as a Strategy! Siobhan and Breeyan.

Problem: 

Jane saves $15 for 22 weeks. How much money does she have saved up?

Step 1: Read the problem.

Step 2: Put it in a maths equation, 15 x 22 =

Step 3: Choose strategy - Splitting factors.

Step 4: Solve it, 

15 x 22 =       

10 x 22 = 220

5 x 22 = 110       

So 220 + 110 = 330

Learning Tip: Remember the numbers you have to add up at the end!

Solving subtraction problems using Equal Adjustment as a Strategy! - Damon and Brock.

Problem:

Janine donated 125 biscuits to the school gala.They sell 76 biscuits. How many biscuits are left?

Step 1: Read the problem.

Step 2: Put it in a maths equation: 125 - 76 =........

Step 3: Choose a strategy: Equal Adjustment.

Step 4: Solve the problem.

        (125 + 4) - (76 + 4)  = ______

        129 - 80 = 49

Learning Tip: Always change/round the second number.

Solving Subtraction Problems using Equal Adjustment as a strategy! - Zac and Brandon.

PROBLEM: Elle went to the mall with $37.89 and brought a pair of skinny jeans for $10.50. How much money does she have left?

Step1: Listen to the word problem.

Step2: Make a maths equation: 37.89 - 10.50 =

Step3: Choose a strategy: Equal Adjustment.

Step4: Solve it.

37.89-10.50=   

Subtract 0.50 from both sides.

So the new equation is:

37.39 - 10 = 27.39

Learning Tip: Always round the second number, this will make solving the problem mentally easier.