Complete the following multiplication table. Activity 1: Revise the multiplication of decimal fractions by using the following activity.

Here are the rounded values for the given numbers. I will assume that "2.345.999" means 2,345.999 (where the first dot is a thousands separator and the second is a decimal point), and that "Nearest thousands" in the last column header is a typo for "Nearest thousandth".

Rounding Rules:

• To round to a specific place value, look at the digit immediately to its right.
• If this digit is 5 or greater, round up the digit in the target place value.
• If this digit is less than 5, keep the digit in the target place value as it is.

1. For the number 64.45368:

• Nearest Unit: The digit in the tenths place is 4. Since $4 < 5$, we keep the units digit as it is. $$64$$
• Nearest Tenth: The digit in the hundredths place is 5. Since $5 \ge 5$, we round up the tenths digit. $$64.5$$
• Nearest Hundredth: The digit in the thousandths place is 3. Since $3 < 5$, we keep the hundredths digit as it is. $$64.45$$
• Nearest Thousandth: The digit in the ten-thousandths place is 6. Since $6 \ge 5$, we round up the thousandths digit. $$64.454$$

2. For the number 9.3472:

• Nearest Unit: The digit in the tenths place is 3. Since $3 < 5$, we keep the units digit as it is. $$9$$
• Nearest Tenth: The digit in the hundredths place is 4. Since $4 < 5$, we keep the tenths digit as it is. $$9.3$$
• Nearest Hundredth: The digit in the thousandths place is 7. Since $7 \ge 5$, we round up the hundredths digit. $$9.35$$
• Nearest Thousandth: The digit in the ten-thousandths place is 2. Since $2 < 5$, we keep the thousandths digit as it is. $$9.347$$

3. For the number 2.345.999 (interpreted as 2,345.999):

• Nearest Unit: The digit in the tenths place is 9. Since $9 \ge 5$, we round up the units digit. $$2,346$$
• Nearest Tenth: The digit in the hundredths place is 9. Since $9 \ge 5$, we round up the tenths digit. $$2,346.0$$
• Nearest Hundredth: The digit in the thousandths place is 9. Since $9 \ge 5$, we round up the hundredths digit. $$2,346.00$$
• Nearest Thousandth: The number is already expressed to the thousandths place. $$2,345.999$$

Here is the completed table:

Number	Nearest Unit	Nearest tenth	Nearest hundredth	Nearest thousandth
64.45368	$\boxed{64}$	$\boxed{64.5}$	$\boxed{64.45}$	$\boxed{64.454}$
9.3472	$\boxed{9}$	$\boxed{9.3}$	$\boxed{9.35}$	$\boxed{9.347}$
2.345.999	$\boxed{2346}$	$\boxed{2346.0}$	$\boxed{2346.00}$	$\boxed{2345.999}$