Question

please answer these questions fast who will answer fast I will mark them as brainliest and follow them and please write with full steps I I am giving you half an hour​

Answer 1

Answer:

71.2

4.67

125

936

Explanation:

this is some anwer

Answer 2

No.1

i) 7.12×10=71.2

ii) 0.467×10=4.67

iii) 12.5×10=125

iv) 0.936×100=936

v) 356.4×100=35,640

vi) 4787.52×100=4,78,752

vii) 2.565×1000=2,565

viii) 0.27×1000=270

ix) 1.3584×1000=1358.4

Note:

1) To multiply a decimal by 10, move the decimal point in the multiplicant by one place to the right.

For examples:

• 834.7 × 10

Here we multiplied the number 834.7 by 10 so we move 1 place to the right.

So,834.7 × 10= 8347

2) To multiply a decimal by 100, move the decimal point in the multiplicant by two places to the right.

To multiply a decimal by 100, move the decimal point in the multiplicant by two places to the right.For examples:

• 98.26 × 100

Multiplication by 100

Here we multiplied the number 98.26 by 100 so we move 2 places to the right.

So,98.26 × 100=9826

3) To multiply a decimal by 1000, move the decimal point in the multiplicant by three places to the right.

To multiply a decimal by 1000, move the decimal point in the multiplicant by three places to the right.For examples:

• 793.41 × 1000

Multiplication by 1000

Here we multiplied the number 793.41by 1000 so we move 3 places to the right.

So,793.41 × 1000=793410

No.2

i) 5.26×30=157.8

ii) 0.75×50=37.5

iii) 1.49×80=119.2

iv) 0.146×200=29.2

Note:

To multiply decimals, first multiply as if there is no decimal. Next, count the number of digits after the decimal in each factor. Finally, put the same number of digits behind the decimal in the product.

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