We all know multiplication is repeated addition. Allow us to have a fast recall of what we now have learnt about
multiplication.
There are 5 teams of two balloons. We will say 5 instances 2.
We will skip depend to get the overall when there are equal teams of objects.
Skip depend 5 instances 2,
we’ll get 10.
2 + 2 + 2 + 2 + 2 = 10
We write 5 instances 2 =
10
Repeated addition
means Multiplication. We use ‘×’ image to point out multiplication. The results of
two or extra numbers when multiplied known as the product.
5 × 2 = 10
Allow us to take one other
instance. There are 2 teams with 4 leaves in every. We will say 2 teams of 4 or
2 instances 4. We will skip depend 2 instances 4 to get the overall.
4 + 4 = 8
We write, 2 × 4 = 8
Think about the next:
I. Andrea made sandwiches for 12 folks. Once they shared it equally, every of them received ½ a sandwich. What number of sandwiches did Andrea make?
Repeated Addition:
We all know every folks will get ½ a sandwich.
Multiplication:
½ × 12
= (frac{12}{2})
= 6
Subsequently, Andrea made 6 sandwiches and shared with 12 folks every of them received ½ a sandwich.
II. Doreen then poured out just a few bottles of contemporary orange juice equally among the many 8 folks. Every of them received (frac{3}{4}) of a glass. What number of bottles of contemporary orange juice did Andrea use?
Repeated addition:
Multiplication:
¾× 8
= (frac{24}{4})
= 6
Doreen used 6 bottles of contemporary orange juice.
So, would you prefer to nonetheless proceed including or would you somewhat multiply.
III.
Within the above instance 4 is repeated 5 instances. Including the identical
quantity known as repeated addition.
Since from the above examples, we are able to perceive clearly that multiplication is quicker than repeated addition.
Multiplication is Including Equal Teams.
1. If Sara has 3 cats how can she depend shortly the numbers of
legs 3 cats have in all?
3 teams of 4 legs; 3 instances 4 = 12
2. If a trainer has 5 books and there are 3 academics, what number of
books have they got in all?
3 instances 5 = 15 ; 3 × 5 = 15
The signal ‘×’ is used to point out multiplication. The results of
multiplication known as product.
Questions and Solutions on Multiplication is Repeated Addition:
1. Depend the objects in every group and fill within the packing containers. One has been finished for you.
|
(i) |
 |
4 teams of three = 4 × 3 |
|
(ii) |
 |
__ teams of __ = __ × __ |
|
(iii) |
 |
__ teams of __ = __ × __ |
|
(iv) |
 |
__ teams of __ = __ × __ |
|
(v) |
 |
__ teams of __ = __ × __ |
Reply:
1. (ii) 4 × 1
(iii) 4 × 2
(iv) 3 × 4
(v) 2 × 5
2. Write the addition
and multiplication information. One has been finished for you.
(i) 3 instances 4 = 4 + 4 + 4 = 3 × 4
(ii) 5 instances 2 = ___________ = __________
(iii) 7 instances 3 = ___________ = __________
(iv) 4 instances 1 = ___________ = __________
(v) 2 instances 5 = ___________ = __________
(vi) 3 instances 3 = ___________ = __________
(vii) 6 instances 4 = ___________ = __________
Reply:
2. (ii) 2 + 2 + 2 + 2 + 2 = 5 × 2
(iii) 3 + 3 + 3 + 3 + 3 + 3 + 3 = 7 × 3
(iv) 1 + 1 + 1 + 1 = 4 × 1
(v) 5 + 5 = 2 × 5
(vi) 3 + 3 + 3 = 3 × 3
(vii) 4 + 4 + 4 + 4 + 4 + 4 = 6 × 4
3. Write the
multiplication information. One has been finished for you.
(i) 5 + 5 + 5 + 5 = 4 × 5
(ii) 3 + 3 = _____ × _____
(iii) 5 + 5 + 5 + 5 +
5 + 5 = _____ × _____
(iv) 4 + 4 + 4 + 4 + 4
= _____ × _____
(v) 2 + 2 + 2 + 2 + 2
+ 2 = _____ × _____
(vi) 1 + 1 + 1 = _____ × _____
(vii) 3 + 3 + 3 + 3 +
3 + 3 + 3 + 3 = _____ × _____
Reply:
3. (ii) 2 × 3
(iii) 6 × 5
(iv) 5 × 4
(v) 6 × 2
(vi) 4 × 1
(vii) 8 × 3
4. Fill in to point out that multiplication is repeated addition-
(i) 5 + 5 + 5 + 5 + 5 + 5 = __________
6 × 5 = __________
(ii) 9 + 9 = __________
2 x 9 = __________
(iii) 10 + 10 + 10 = __________
3 × 10 = __________
(iv) 2 + 2 + 2 + 2 + 2 = __________
5 × 2 = __________
(v) 4 + 4 + 4 + 4 = __________
4 x 4 = __________
(vi) 6 + 6 + 6 + 6 + 6 = __________
5 × 6 = __________
(vii) 3 + 3 + 3 + 3 + 3 + 3 = __________
6 × 3 = __________
(viii) 7 + 7 + 7 = __________
3 × 7 = __________
|
(i) |
 |
2 + 2 + 2 + 2 = _____ 4 twos are _____ |
|
(ii) |
 |
4 + 4 + 4 + 4 = _____ 4 fours are _____ |
|
(iii) |
 |
3 + 3 + 3 = _____ 3 threes are _____ |
|
(iv) |
 |
5 + 5 2 fives are _____ |
● Multiplication is Repeated Addition.
● Multiplication of Fractional Quantity by a Entire Quantity.
● Multiplication of a Fraction by Fraction.
● Properties of Multiplication of Fractional Numbers.
● Worksheet on Multiplication on Fraction.
● Division of a Fraction by a Entire Quantity.
● Division of a Fractional Quantity.
● Division of a Entire Quantity by a Fraction.
● Properties of Fractional Division.
● Worksheet on Division of Fractions.
● Simplification of Fractions.
● Worksheet on Simplification of Fractions.
● Worksheet on Phrase Issues on Fractions.
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