Subtraction

Poll

How comfortable are you with regrouping?

• Not at all

• Sort of

• Good

• Excellent

Steps for Subtracting

• Begin in the ones place

• Ask "Can I Do It?"

• If yes, subtract​

• ​If no, regroup and then subtract

Multiple Choice

In what place should I start subtracting?

• hundreds

• tens

• ones

Multiple Choice

What question should you always ask when subtracting?

• Should I really do this?

• Can I Do It?

• Did I brush my teeth today?

• Will it rain today?

​742-473=

​4,367-3,489=

​15,486-8,787=

Multiple Choice

218-99=

• 119

• 317

• 127

• 12

Multiple Choice

1,825 - 498

• 1,473

• 1,327

• 1,477

• 1,487

Multiple Choice

10,580-9,432=

• 1,145

• 1,198

• 1,148

• 1,123

• 1,164

​700-143=

​600-486=

Multiple Choice

500-177=

• 109

• 223

• 323

• 1007

Multiple Choice

Amy's book has 600 pages. She has read 345 so far. How many pages does Amy have left to read?

• 265

• 245

• 255

Poll

How confident do you feel with your ability with subtraction and regrouping now?