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There were 265 people at the afternoon show. There were 387 people at the evening show. How many people were at the two shows?
Sue had 4362 ice cream cones. Her sister Jane gave her 6545 more, and her brother Jack added 43 to her pile. How many ice cream cones does she have?
There were 3422 students in the gym for the assembly. Then, 89 students left the gym. How many students stayed in the gym?
Rosi had 200 sheets of construction paper. She used 67 sheets making invitations to a party and the rest making decorations. How many sheets did she use to make decoration?
Sarah ate 17 cookies on Monday, and she ate 12 cookies on Tuesday. ABOUT how many cookies did Sarah eat over the two days.
Sam got 13 tickets to the movies. Karen got 17 tickets to the same movie. Finally, Alex got 25 tickets to it. ABOUT how many total tickets to the movie did they buy?
Clement ate 59 pounds of dog food. Beni ate 199 pounds. ABOUT how much more did Beni eat than Clement?
Frank was buys sorting important papers when suddenly the wind blew them to the ground. He knew that he had 328 red papers, 32 green papers, and 109 orange papers. ABOUT how many papers were scattered on the floor?
Frank picked up about 450 pieces of paper from the ground suddenly he tripped over a pencil and 98 of the papers dropped. Sue came by and picked up 23 of the papers. ABOUT how many papers does Frank have?
Jill made a 434 cookies for her party. Sarah made 278 cookies for the party, too. How many cookies will they have at the party?
Ms. Kaszycki bought 569 dog treats. Ms. Madlon stole 276 of them. How many dog treats does Ms. Kaszycki have now?
Estimate to BOTH the nearest 10 and nearest 100 to answer: 804 - 379
Then find the actual answer.
Which estimation would be a better choice? Why?
Tens place
Hundreds place
She is wrong.
78 would round to 80 going to the nearest 10. You only go up to the immediate 10 above. 90 is too far away to work.
You underline the number in the TENS and look to the right. That tells you to round up.
Nearest 10 - 670
Nearest 100 - 700
She is not correct.
You would underline the HUNDREDS place and look to the right. The tens place is a 4 so it rounds DOWN. The correct answer would be 800.
862
1360
5210
265 + 387 = 652
4362 + 6545 + 43 = 10,950
731
87
368
3,333 students stayed
200 - 67 = 133 sheets
ABOUT - 20 + 10 = 30
EXACT - 17 + 12 = 29
10 + 20 + 30 = 60 tickets
200 - 60 = 140
ABOUT - 320 + 30 + 110 = 460 papers
ABOUT
450 - 100 = 350
350 + 20 = 370
434 + 278 = 712 cookies
569 - 276 = 293 treats
Nearest ten: 800 - 380 = 420
Nearest hundred: 800 - 400 = 400
Actual answer: 804 - 379 = 425
ABOUT -
330 + 290 + 0 = 620
327 + 294 + 2 = 623
Nearest 10
340 - 130 - 30 = 180 candy bars left
Nearest 100
300 - 100 - 0 = 200 candy bars left
Actual answer
342 - 133 - 34 = 175 candy bars left
MOST SENSIBLE? Nearest 10 - always gives a closer answer, at least 1 of the numbers would round to 0.