Multiplying by exponents
What is the answer below?
3.4 x 10 to the 4th power
34,000
Solve using area model.
7.8 x 15=
117
Alyvia babysits and gets $15.50 per hour. She babysat for 3 hours. How much money did she make?
$46.50
To find an approximate value in a calculation is to....
estimate.
Round to the nearest whole number.
9.7
10
What is the answer below?
6.5x10 to the 2nd power
650
Solve using area model.
5.6 x 7.6 =
42.56
Silas walks 0.7 km to the park. He walks to the park 52 times a year. How many kilometers does Silas walk this year?
36.4 Kilometers or km
When multiplying by a power of 10, the ________ tells us the number of places the digits shift to the left.
exponent
Round to the nearest whole number.
5.67
6
What is the answer below?
6.78x10 to the 8th power?
678,000,000
Solve using area model.
6.7 x 31 =
207.7
Ellianna lines up all her soccer cleats she owns in a line. Each cleat is 5.5 inches. She lined up 22 soccer cleats. How long is the line of cleats in inches?
121 inches
A ______ gives two numbers between which acceptable values fall.
Range
Mrs. Rosen paid her brother Evan $10.31 per day to walk Kai when she was gone. About how much did he make in a week?
about $70 in a week
What is the answer below?
9.231 x 10 to the 4th power?
92,310
4 x 9.7 =
38.8
Parker helped his mom do chores around the house for a week while she was sick. He got paid $8.75 a day. How much did he get paid total when the week ended?
$61.25
When multiplying, the values placed in an area model are called________.
partial products
Tai'Lyn helped out at the Amistad fundraiser and raised $16.50 per hour. About how much did she raise when she worked 7.6 hours?
17x8=136
About $136
What is the answer below?
8.9 x 10 to the 10th power?
89,000,000,000
Solve using area model
45 x 9.6 =
432
$22.47
No they did not.
What strategy is it called when we use area for multiplying decimals?
Area model
Grant raised money for his favorite video game. He raised $563.60 in a week. He raised the same amount every week. At the end of the month about how much did he make?
564 x 4 =
about $2.256