NBT1-7

Front

What is expanded form in mathematics?

Back

Expanded form is a way of writing numbers that shows the value of each digit. For example, the number 3562.14 in expanded form is 3 × 1000 + 5 × 100 + 6 × 10 + 2 × 1 + 1 × (1/10) + 4 × (1/100).

Front

How do you multiply decimals?

Back

To multiply decimals, multiply the numbers as if they were whole numbers, then count the total number of decimal places in both numbers and place the decimal point in the product accordingly.

Front

What is the weight comparison of two objects?

Back

To compare weights, you can subtract one weight from the other or use symbols like <, >, or = to show which is heavier or if they are equal.

Front

How do you convert kilometers to miles?

Back

To convert kilometers to miles, multiply the number of kilometers by 0.62. For example, 12 kilometers is approximately 12 × 0.62 = 7.44 miles.

Front

What is the formula to calculate total earnings over time?

Back

Total earnings can be calculated using the formula: Total Earnings = Weekly Earnings × Number of Weeks. For example, if Jeane earns $62.95 per week for 6 weeks, her total earnings are $62.95 × 6 = $377.70.

Front

What does the term 'decimal' mean?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

Front

What is the significance of place value in a number?

Back

Place value determines the value of a digit based on its position in a number. For example, in the number 3562, the digit 5 is in the hundreds place, so it represents 500.

Front

How do you write a number in standard form?

Back

Standard form is writing a number using digits. For example, the number three thousand five hundred sixty-two and fourteen hundredths is written as 3562.14.

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. If a × b = c, then c ÷ b = a and c ÷ a = b.

Front

How do you find the area of a rectangle?

Back

The area of a rectangle is found by multiplying its length by its width. Area = Length × Width.