Vocabulary
Rounding
Break Apart
Estimate
Add & Subtract
100
Property of addition that says any number plus zero equals that number.
Identity property of addition.
100
What is 69 rounded to the nearest 10?
70
100
Break apart 364
300 + 60 + 4
100
What is a better estimate for 269: 200 or 300?
300
100
Bradlee gave Mya 35 Skittles. Riley gave Mya 55 Skittles. How many more skittles did Riley give Mya than Bradlee?
55 - 35 _____ 20
200
What are numbers that are easy to compute mentally.
Compatible numbers.
200
What is 142 rounded to the nearest 10?
140
200
Break apart 521
500 + 20 + 1
200
Which is a better estimate for 823: 800 or 900?
800
200
Mrs. Arias went to Walmart and bought a pencil sharpener for her class for $25. She had already paid $13 for another pencil sharpener, which was way too loud. How much did she spend on pencil sharpeners altogether?
25 +15 ____ 40 Way too much!!!!!
300
When you _________ a number to the nearest ten or hundred, it tells you about how much or how many.
round
300
What is 432 rounded to the nearest 100?
400
300
Break apart 911
900 +10 + 1
300
Estimate the sum of 421 and 223.
421 -------> 400 223 ------->200 ____ _____ 600
300
If Mrs. Estrada drives 250 miles each to get to the beach and 250 miles to get back home, how many miles will she drive in total?
250 +250 _____ 500
400
Which property states that you can add two or more numbers in any order and get any sum?
The commutative property of addition.
400
What is 459 rounded to the nearest 10?
460
400
Break apart and add 124 + 265
100 + 20 + 4 200 + 60 + 5 ____________ 300 + 80 + 9
400
Estimate the sum of 349 +129
349 --------- 350 129 --------- 100 ____ _____ 450
400
Jerek and Sydney are going to Chucky Cheese. Sydney earned 842 tickets and Jerek earned 230. How many more tickets did Sydney earn than Jerek?
842 - 230 _____ 612
500
Property of addition that says you can group addends in any way and still get the same sum.
Associative property of addition
500
What is 550 rounded to the nearest 100?
600
500
Break apart and add 343 + 120
300 + 40 + 3 100 + 20 + 0 ____________ 400 + 60 + 3
500
Estimate the sum of 89 +368
89 -------- 100 368 -------- 400 ___ ____ 500
500
Mr. Pincoski and Mrs. Morin collected the fundraising money from Mrs. Arias' class. Mr. Pincoski collected $239 and Mrs. Morin collected $162. How much more money did Mr. Pincoski collect than Mrs. Morin?
239 - 162 _____ 77
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