Question

Pls help thanks ! it’s math !

Answer 1

Ans a) It implies Eight times Two,

∴
`2+2+2+2+2+2+2+2=16`

Ans b) Commutative property:

∴ 8 × 2 = 2 × 8 .

it means Two times Eight,

i.e
`8+8 = 16`

Ans c) The 'b' part is easier than 'a' part because it is easier to add Eight two times as compared to add Two for Eight times.

Explanation:

a . How would a child use addition to find 8 × 2 ?

Ans a) It implies Eight times Two,

∴
`2+2+2+2+2+2+2+2=16`

b. How could the commutative property be used to make this easier ?

Ans b) Commutative property:

The Commutative property states that order does not matter. Multiplication and addition are commutative.

∴ 8 × 2 = 2 × 8 .

it means Two times Eight,

i.e
`8+8 = 16`

c. Why is it easier ?

Ans c) The 'b' part is easier than 'a' part because it is easier to add Eight two times as compared to add Two for Eight times.

Answer 2

a. (8 × 2) = (2 + 2 + 2 + 2 + 2 + 2 + 2 + 2) = 16

b. (8 × 2) = (2 × 8) = (8 + 8 ) = 16 {Using the commutative property}

c. It is easier to calculate (8 + 8 ) than (2 + 2 + 2 + 2 + 2 + 2 + 2 + 2).

Explanation:

Multiplication operation is equivalent to the repeated addition operation.

For example (3 × 4) can be treated as 3 groups of 4 or 4 + 4 + 4 then use the addition facts to learn the multiplication facts.

a. Now, (8 × 2) can be treated as 8 groups of 2 or 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 then using the addition facts we get (8 × 2) = (2 + 2 + 2 + 2 + 2 + 2 + 2 + 2) = 16

b. If we apply the commutative property of multiplication then (8 × 2) = (2 × 8) and we can assume it as 2 groups of 8 or (8 + 8) i.e. 16 which makes it easier to get the multiplication process by addition operation.

c. It is clear that (8 + 8) is much more easier to calculate than (2 + 2 + 2 + 2 + 2 + 2 + 2 + 2) by addition operation. (Answer)