Page 12 - prim 4 كامل

Delta Modern Language Schools
Maths Department
Prim 4 2023-2024

Ex.2 :
869 – 675

Step 1 : Subtract the ones ( 9 – 5 = 4 ones )
Step 2 :
Regroup hundreds and subtract tens

16 tens – 7 tens = 9 tens
Step 3 : Subtract the hundreds

7 hundreds – 6 hundreds = 1zhundred
5) Bar models, variables and story problem

Bar Model

We can use it to solve story problem

Ex. : There are 5,526 bees in a hive. In this hive 3,491 are males and

the rest are females. How many females in this hive?

Bar Model :

5,526

3,491 X (Females) Variable

Equation : 5,526 = 3,491 + X

Solution : X = 5,526 – 3,491 = 2,035 females

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