Review NS.2.2 and NS.2.3

What are the steps in the standard algorithm for long division

• find out how many hundreds, then tens, then ones and then add

• Multiply, subtract, bring down

• divide, multiply, subtract, check, bring down

• draw circles for groups and then put dots inside

What do you do first before you can solve an addition or subtraction problem with decimals?

• line up the decimal points

• put the numbers on top of each other

• add

• subtract

Tags

CCSS.5.NBT.B.7

When you multiply decimals how can you decide where to put the decimal in the product?

• bring the decimal down

• count how many digits are after the decimal in the factors and make sure you have the same number of digits after a decimal in the product

• put the decimal above in the answer

• Put it wherever because it doesn't matter

If you are dividing by a decimal how can you change it to a whole number before dividing?

• Move the decimal to the right until it is a whole number and then make sure you move the decimal the same number of spaces in the dividend.

• Move the decimal to the left until is a whole number and then make sure you move the decimal the same number of spaces in the dividend.

• You don't have to do anything.

• Move the decimal to the right 1 space in the divisor and then 2 spaces in the divisor.

 $1258\ \div\ 34$  

On Saturday Keisha ran 3.218 kilometers.  On Sunday she ran 2.41 Kilometers.  How much farther did she run on Saturday than Sunday?

 $45.2\ +\ 6.37$  

 $2.65\ \times\ 4.7$  

 $\frac{26.73}{9}$  

 $64\ \div\ 0.4$