NJSLA Number and Operations Do Now

What is the first thing you should do when adding or subtracting decimals?

• Line up the decimal points.

• Annex zeros to make the numbers the same length.

• Bring the decimal point down into the answer.

• Cry and hope your teacher feels bad for you.

True or False? You ALWAYS line up the decimals when multiplying decimals.

• True

• False

True or False? We cannot divide by a decimal, so sometimes we need to move the decimal point to make the divisor a whole number.

• True

• False

When adding or subtracting fractions, what is the first step?

• SImplify.

• Create equivalent fractions.

• Find a common denominator.

• Add or subtract the numerators.

True or False? When multiplying fractions, you need to find common denominators first.

• True

• False

What must you do first when multiplying or dividing mixed numbers?

• Find common denominators.

• Create equivalent fractions.

• Change the mixed numbers in to improper fractions.

• Multiply the whole numbers.

What number is located at the point shown on the number line?

• 0

• -0.5

• -1

• -1.5

Which integer would represent a loss of $60?

• $60

• -$60

• +$60

• $60 - x

Which integer would represent an increase of 5 points?

• 5

• -5

• 5x

• 5/x

What is the opposite of the number shown on the number line?

• 0

• -5

• 5x

• 5