Estimate 257 + 432 using front-end estimation (round first, then add). Show your work!
Example Answer: 300 + 400 = 700
100
Find the answer: 938 + 54
992
100
Find the answer: 576 - 319
257
100
Find the answer: 1,008 - 19
989
100
Cory Wong had a huge collection of guitar strings. He had 357 of them. Jack knew his collection wasn't nearly as big, so he gave up and decided to give all of his strings to Cory. Jack had 194 strings. How much does Cory have in all now?
551 Strings
200
Estimate 598 - 373 using front-end estimation. Show your work!
Example Answer: 600 - 400 = 200
200
Find the answer: 4,891 + 399
5,290
200
Find the answer: 1,538 - 917
621
200
Find the answer: 20,010 - 3,692
16,318
200
Neon Pegasus survived the battle over Cupcake Mountain. In that battle she destroyed 6,108 Gummy Solders and 2,094 War Wafers. How many more Gummy Soldiers did she destroy than War Wafers?
4,014 more
300
Estimate 2,389 + 624 using front-end estimation. Show your work!
Example Answer: 2,400 + 600
300
Find the answer: 516,040 + 29,371
545,411
300
Find the answer: 25,190 - 7,365
17,825
300
Find the answer: 300,900 - 1,072
299,828
300
At the taco party, Angela made over 500 tacos! Each baking sheet of tacos used 4,519 shreds of beef and 7,190 shreds of cheese. About how many shreds were used altogether in a baking sheet of tacos?
Example answer: 12,000 shreds
400
Estimate 64,198 - 5,725 using front-end estimation. Show your work!
Example Answer: 64,000 - 6,000 = 58,000
400
Find the answer: 746,389 + 125,458
871,847
400
Find the answer: 395,729 - 47,918
347,811
400
Find the answer: 600,015 - 20,890
579,125
400
Space Unicorn only uses his marshmallow laser in self defense or in the defense of others. He reluctantly poofed 921,044 Space Flies and 38,013 Rainbow Destroyers last year. How many baddies did he destroy together.
959,057 Baddies
500
Estimate 197,041 + 54,199 using front-end estimation. Show your work!
Example Answer: 200,000 + 50,000 = 250,000
500
Find the answer: 3,395,124 + 567,890
3,963,014
500
Find the answer: 2,103,939 - 521,907
1,582,032
500
Find the answer: 5,000,007 - 4,444,444
555,563
500
Mr. Gingerich had 6,290,334 hairs on his head. He had 529,055 hairs on his beard. How many more hairs does he have on his head than his face?