Round the following number to the nearest ten, then the nearest 100.
689
What is 690, 700?
100
Two even numbers added together will always produce a sum that is __________.
What is even.
100
Sal is subtracting the following equation using expanded form. How does he write the problem and what is the correct answer? 235 - 112
What is 200 + 30 + 5
-100 + 10 + 2
This equals 123.
100
Mary solves the problem 52 - 29 = 23. How can she check her work to be sure she is correct?
What is 23 + 29 = 52?
200
What numbers would make the following equation true?
(3 + 6) + 2 = ___ + (6 + ___)
What are 3 & 2?
200
The scores for 4 teams playing rummy are 321, 126, 578, and 222. What are these scores when rounded to the nearest ten?
What are 320, 130, 580, and 220?
200
Use a number chart to shade the row at the 12 and the column at the 12. What property of addition does this show?
What is commutative property of addition?
200
Solve the following equation using expanded form.
491 + 263
What is 400 + 90 + 1
+ 200 + 60 + 3
The answer is 754.
200
Kayla has $427. She wants to buy 2 pairs of bike shorts and a bike helmet. Bike shorts cost $37 and bike helmets cost $115. How much money does she spend?
What is $189?
300
In this property of addition, anything added to the number zero stays the same.
What is the identity property of addition?
300
Mira's pony weighs 423 pounds. Marc's pony weighs 359 pounds. Choose the reasonable equations to find the estimated weight of both horses.
A. 430 + 360 D. 425 + 350
B. 420 + 360 E. 400 + 300
C. 400 + 400
What is B, C, D?
300
True or false - all even numbers can be shown as 2 equal groups?
What is true?
300
Solve the following equation using expanded form.
328 - 194
What is 300 + 20 + 8
- 100 + 90 + 4
The answer is 134.
300
Macy went to the store to buy milk, bread and eggs. She has $10. The cost of milk is $2.52, the cost of bread is $0.98, and the cost of eggs are $1.15. About how much change will Macy get?
What is about $5.00?
400
2 + (4 +3) = 4 + (2 + 3) is an example of which 2 properties of addition?
What are associative and commutative?
400
Sammy wants to estimate the sum of 358 + 267 by rounding to the nearest hundred. She writes 360 + 270. Is she correct?
What is No, she needs to write 400 + 300.
400
The sum of 2 odd numbers is always ________.
What is even?
400
Jack wants to use mental math to solve 417 - 207. He adds 3 to 207 to make it 210. What will he do to the answer?
What is add 3?
400
Jason is collecting box tops for school. His mom saved 136 box tops, his aunt saved 54 box tops and his grandma saved 213 box tops. About how many more will Jason need to get to his goal of 500?
What is about 100?
500
Choose all the equations that are true.
A. 562 + 0 = 0
B. 426 + 312 = 312 + 426
C. 81 + (43 +12) = (81 + 43) + 12
D. 122 + (38 + 4) = 132 + (68 + 4)
E. 378 + 0 = 378
What are B, C, E?
500
Tina wants to add 421 to 573. What compatible numbers can she use to help her estimate the sum?
A. 400 + 500
B. 425 + 575
C. 450 + 550
D. 500 + 600
What is B?
500
The sum of an even number and an odd number is always _________.
What is odd?
500
Fiona is subtracting 345 - 118. She adds 2 to 118. What must she do to the answer?
What is add 2.
500
Kelly has saved his allowance of $10 for the past 7 weeks. He wants to buy a toy race track that costs $54 and 2 toy cars that are $21 each. Does he have enough money?