Subtraction with Regrouping
753 - 419 =
334
703 - 216 =
487
Estimate the sum by rounding each number to the nearest ten then adding: 124 + 267 =
120 + 270 = 390
Alex grew tomato plants in his backyard. This year he grew 127 tomatoes, but birds had eaten 19 tomatoes. Alex picked the rest. How many tomatoes did Alex pick?
127 - 19 = 108
108 Tomatoes
What is 9,000 + 800 + 30 + 6 in standard form?
9,836
476 - 97 =
379
240 - 38 =
202
Estimate the sum by rounding each number to the nearest hundred then adding: 345 + 476 =
300 + 500 = 800
Miss Maltese wanted to buy snacks for the class. She went to Dunkin and bought a box of 100 munchkins, 22 donuts, and 75 hashbrowns. How many snacks did Miss Maltese buy in total?
100 + 22 + 75 = 197
197 Snacks
What is 6,000 + 400 + 80 + 9 in standard form?
6,489
302 - 163 =
139
300 - 132 =
168
Round each number to the nearest 10 then subtract: 123 - 18 =
120 - 20 = 100
Insects have invaded Lee’s house. He gets rid of 28 insects on his own. Then an exterminator gets rid of 584 insects. When they finish, there are no insects left. How many insects were originally in Lee’s house?
584 + 28 = 612
612 Insects
What is 4,120 in expanded form?
4000 + 100 + 20 + 0