Addition of Large Numbers
15000 + 13000
28000
17000 - 14000
3000
Maima's pedometer recorded 43,498 steps in one week. Her goal is 88,942 steps. How many more steps does she need to reach her goal?
45,444 steps
Using subtraction to check an addition equation is?
Inverse operation
Round to hundreds 15,876 + 21,342= Write the equation and the sum.
15,900+21,300= 37,200
33450 + 27820
61270
42540 - 23480
19060
Ryan wrote this subtraction problem, 657,392 - 434,597= 222, 895 . What mistake did he make and what is the correct answer?
He did not regroup in the hundreds
222,795
Adding 0 to a number gives the same number is?
Identity Property of Addition
Round to hundreds 459 + 730
1200
48523 + 50788
99311
68723 - 37852
30871
Draw a bar diagram to solve this problem. Aidan traveled 11, 469 miles one day and then another
12, 332 miles the next day. How far did he travel altoghter? Solve using d for distance traveled
d= 23,801 miles
A letter or symbol that stands for an unknown number is?
Variable
Round to thousands 178,678 - 91,497= Write the equation and the difference
179,000-91,000= 88,000
17230 + 19450 + 25792
62472
94572 - 15650 - 48723
30199
There are 301,010 people at the fair. There are 198,675 people at the concert. How many more people are the fair than the concert?
102,335
Changing numbers to make a problem easier while keeping the answer equivalent is?
Compensation
Round to ten thousands 754,289 + 619,882+8,721= Write the equation and find the sum.
750,000+620,000+10,000=1,380,000
18290 + ______ = 47358
29068
87254 - ______ = 32876
54378
Trevor told Freya that an alogrithm is you can switch the order of numbers in a subtraction problem and still get the same answer. Is he correct? If not what is the actual definition?
Incorrect. It is the order in which you solve a problem.
Which property is shown, 435+879=879+435
The Communative Property
Round to the tens 63,594 - 34,629= Write the equation and find the difference.
63,590-34,630= 28,060