Rounding to the Nearest 10
Round 41 to the nearest 10
40
Round 310 to the nearest 100
300
746-532=?
214
What property is shown here:
456 + 342 = 342 + 456
Commutative Property of Addition
Round to the nearest ten to estimate the difference of 789 – 371.
420
Round 68 to the nearest 10
70
Round 340 to the nearest 100
300
237+412=?
649
What property is shown here:
30 + 0 = 30
Identity Property of Addition
Mr. Stearns wants to buy a lamp for $199, a side table for $85, and light bulbs for $12. Draw a bar diagram to find the total cost of the items.
Let's see your bar diagrams!
Round 237 to the nearest 10
240
Round 783 to the nearest 100
800
374+238=?
612
What property is shown here:
3 + (7 + 8) = (3 + 7) + 8
Associative Property of Addition
Don sold 180 books in the morning, 293 books in the afternoon, and 104 books in the evening. How many books did they sell in all?
577 books
Round 545 to the nearest 10
550
Round 245 to the nearest 100
200
400-168
232
Fill in the blank:
62 + 0 = __
62
A school had 458 second graders, 212 third graders, and 277 fourth graders. How many more second and third graders are there in the school than fourth graders?
393
Round 899 to the nearest 10
900
Round 950 to the nearest 100
1,000
768-259=?
509
Fill in the blank:
14 + (16 +15) = (__ + 16) +15
14
Regina's bakery makes 304 pies in January. Her bakery made 34 fewer pies in February. How many pies did the bakery bake in both months?
574 pies