5th Grade Math Review Monday

5th Grade Math Review Monday

Multiple Choice

Which of the following is the expanded form of 342.5

• three hundreds + four tens + two ones + fives oneths

• Three hundreds + four tens + two ones + five tenths

• Three hundreds + four tens + two + five

• Three hundreds + four tens + two ones + five hundredths

Base Ten Tricks

• When multiplying by base ten numbers, you move the decimal to the right by the amount of zeros in the number.

• When dividing by base ten numbers, you move the decimal to the left by the amount of zeros in the number.

• Exponents by base ten, you will move the decimal to the right the amount of the exponent.

Exponents

• Multiply the base number by itself however many times the exponent says.

• 3 to the second power, is 3 x 3