Multi-Digit Number

Front

What is rounding?

Back

Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was. For example, rounding 4.86 to the nearest tenth gives 4.9.

Front

How do you round a number to the nearest tenth?

Back

To round a number to the nearest tenth, look at the digit in the hundredths place. If it is 5 or greater, round up the tenths place by one. If it is less than 5, keep the tenths place the same.

Front

What is estimation in mathematics?

Back

Estimation is a method used to find an approximate value that is close to the exact answer. It helps in making quick calculations without needing precise numbers.

Front

How do you estimate the product of two numbers?

Back

To estimate the product, round each number to a convenient value and then multiply the rounded numbers. For example, to estimate 5.7 × 3.2, round to 6 × 3 = 18.

Front

What does it mean to divide equally?

Back

Dividing equally means sharing a total amount into equal parts. For example, if 1260 pencils are divided among 45 students, each student receives the same number of pencils.

Front

How do you find the number of items each person gets when dividing?

Back

To find how many items each person gets, divide the total number of items by the number of people. For example, 1260 pencils ÷ 45 students = 28 pencils per student.

Front

What is a quotient?

Back

A quotient is the result of dividing one number by another. For example, in 728 ÷ 16, the quotient is 40.

Front

How do you estimate the quotient of two numbers?

Back

To estimate the quotient, round both the dividend and the divisor to convenient numbers and then divide the rounded numbers. For example, to estimate 6.34 ÷ 2.1, round to 6 ÷ 2 = 3.

Front

What is multiplication?

Back

Multiplication is a mathematical operation where a number is added to itself a certain number of times. For example, 5 × 3 means adding 5 three times: 5 + 5 + 5 = 15.

Front

What is division?

Back

Division is a mathematical operation where a number is split into equal parts. For example, 20 ÷ 4 means splitting 20 into 4 equal parts, which is 5.