Write the decimal form of the number names.

Six hundred forty three and seven tenths.

What is the value of ${\left(.4\right)}^2+{\left(.04\right)}^2+{\left(.004\right)}^2 ?$

Simplify :

$1.123 + 11.23 + 112.3 = ?$

1. $123.453$
2. $132.143$
3. $124.653$
4. $134.643$

Between which two numbers in tenths place on the number line does the given number lie?

$0.125$

Write the following decimals in the place value table.

$0.29$

Write the following decimal in the place value table.

$19.4$

Between which two whole numbers on the number line is the number $0.8$ lie? Which of these whole numbers is nearer to the number?