Add It Up
3,674 + 4,369=
8,043
8,715 - 5, 923=
2,792
At a tire factory, 3,166 tires were made on Thursday and 2,941 tyres were made on Friday. How many tyres were made on Thursday and Friday in all?
6,107 tyres
Should you use addition or subtraction when you see/hear the word "sum"?
addition
Round 25,196 to the nearest thousand
25,000
6,000 + 3,173=
9,173
6000-2,173=
3,827
Sara scored 2,293 points in a video game. That was 1,536 more than Elvin's score on the same game. How many points did Elvin score?
757 points
Should you use addition or subtraction when you see/hear the word "total"?
addition
Write in numbers: 50,000 + 80 + 3
50,083
5,215 + 3,107=
8,322
9,534 - 4,085=
5,449
There are 11,500 seats in the basketball arena. For one game, 9,465 seats were filled. How many seats were empty?
2,035 seats were empty
Should you use addition or subtraction when you see/hear the word "difference"?
subtraction
What are 2 factors of 63?
1, 63; 3, 21; or 7, 9
43,674 + 3,372=
47,046
18,143 - 5,923=
12,220
Two years ago, Bob bought a used car that had 14,854 miles on the odometer. Last year, he drove 8,240 miles. This year, he drove 9,273 miles. How many miles does the odometer show now?
32,367 miles
What does "mentally" mean?
Doing quickly in your mind/brain
Use <,>,= 237,325 _____ 237,352
< (less than)
2,869 + 25,946=
28,815
The difference in 8,125 and 15,219
7,094
George bought a car for $17,067. This price included extra upgrades for $1,248. What was the price of the car without these upgrades?
$15,819
What is the FIRST thing you should do when you see an addition or subtraction sum?
Estimate/predict your answer before working it out
Write in numbers: eight hundred and nine thousand, and sixty-two
809,062