Addition
45 + 32 =
77
89 - 46 =
43
Show a reasonable estimation for 592 + 189
600 + 200 = 800
The answer to an addition problem is called the...
sum
Write seven thousand, forty-nine in standard form.
7,049
59 + 94 =
153
41 - 27 =
14
Show a reasonable estimate for 912 - 275
900 - 300 = 600
The answer to a subtraction problem is called the ...
Difference
Write 52,035 in expanded form.
50,000 + 2,000 + 30 + 5
458 + 89 =
547
618 - 387 =
231
Show a reasonable estimate for 869 - 339
900 - 300 = 600
You can't switch the order of the numbers in subtraction, but you can in addition. This is called the ___________ property.
Communitive
What place is underlined 735,149
Ten thousands
736 + 388 =
1,124
721 - 555 =
166
Check using the inverse operation: 451 - 258 = 193
193 + 258 = 451
What are the four operations of math?
addition, subtraction, multiplication, and division.
What is the value of the 8 in the number 52,687
80
5,976 + 3,896 =
9,872
9,000 - 1,458 =
7542
Check using the inverse operation: 4,023 - 2,577 = 1446
1446 + 2577 = 4023
A math problem with an equal sign is called an equation. What do we call one without the equal sign?
An expression
In the number 717,806 the 7 in the hundred thousand's place is worth _____ times the 7 in the thousand's place.
100