Add and Subtract Decimals
Expanded Form

Exponents
Multiplication
Place value
100
26.1
What is 22.4 + 3.7
100
3,456
What is (3 x 1,000) + (4 x 100) + (5 x 10) + (6 x 1)
100
4 10 =
What is 10,000
100
44 x 8 =
What is 352
100
456,321 The digit in the ten thousands place
What is the 5
200
32.03 + 7.3
What is 39.33
200
34,209
What is 3 x 10,000 + 4 x 1,000 + 2 x 100 + 9 x 1
200
6 10 =
What is 1,000,000
200
35 x 100 =
What is 3,500
200
34. 203 The value of the 3 is_____
What is 0.003
300
12.02 - 6.55
What is 5.47
300
5 5. 6 7 2 (decimal form)
What is 5 x 10 + 5 x 1 + 6 x 0.1 + 7 x 0.01 + 2 x 0.001
300
8 10 =
What is 100,000,000
300
38 x89 =
What is 3, 382
300
There is 12. 392 liters of juice in the bottle. The digit that is in the tenths place is the_________.
What is 3
400
104.07 - 72.99
What is 31.08
400
304.007 (fraction form)
What is 3 x 100 + 4 x 1 + 7 x 1/1000
400
11 10
What is 100,000,000,000
400
99 x 77 =
What is 7,623
400
Jonathan wrote 304.256 on the white board. He said that the 5 digit is ten times (x10) the 2 digit. Is he correct?
What is No. The 5 digit is ten times less than the 2 digit.
500
344.389-205.009
What is 139.38
500
522.031 (decimal form)
What is 5 x 100 + 2 x 10 + 2 x 1 + 3 x 0.01 + 1 x 0.001
500
5 235 x 10 =
What is 23, 500,000
500
456 x 34 =
What is 15,504
500
Susan and Sarah had a mathematical argument. The teacher put the following number on the white-board: 4,5 6 7. 0 8 2 Susan said the 6 digit was 1,000 times greater than the 8 digit. Sarah said that the 6 digit was only 100 times greater than the 8 digit. Who is right? Why?
Who is Susan. She correct because the 6 digit is in the tens place and you need to move left 3 places to get to the 8 place, which is the hundredths place. Thats 10 x 10 x 10; or 1,000
M
e
n
u