Go Math Lesson

Go Math: Chapter 6-3-Digit Addition and Subtraction

Break Apart Addends to Find a Sum

Sum: an answer to an addition problem

Separate the place values and line them up.

Start in the ones place, add.

Add the tens place.

Add the hundreds place.

Put the number back together, regrouping if needed.

​Make sure place values are lined up!

Practice Breaking Apart Addends

​500

​10

​8

​200

​20

​700

​30

​9

​739

​1

Multiple Choice

Which is the correct separation of the first number?

• 4+3+8

• 400+30+8

• 400+3+80

• 300+430+83

Multiple Choice

Which is the correct separation of the second number?

• 100+40+2

• 1+4+2

• 10+40+20

• 100+20+4

Multiple Choice

What is the correct answer?

• 523

• 5710

• 580

• 316

Draw each place value for the first number at the top of the chart.

Draw each place value for the second number below.

Add the place values starting in the ones place. Regroup if needed. ​

Draw Quick Pictures

Multiple Choice

125+344=

• 401

• 459

• 221

• 469

Multiple Choice

231+218=

• 449

• 459

• 17

• 256

Multiple Choice

231+218=

• 449

• 459

• 17

• 256

Multiple Choice

Mrs. Carol sold 346 child tickets and 253 adult tickets. How many tickets did Mrs. Carol sell?

• 308 tickets

• 599 tickets

• 103 tickets

• 256 tickets

Multiple Choice

Mr. Harris counted 227 gray pebbles and 341 white pebbles. How many pebbles did Mr. Harris count?

• 429 pebbles

• 321 pebbles

• 568 pebbles

• 893 pebbles

Addition with Regrouping

​When do I regroup?

If a place value adds up to 10 or more, you need to regroup. Leave the ones behind and move the ten over.

​12

3

7

Multiple Choice

142+285=

• 3127

• 427

• 584

• 777

Subtraction

What is Subtraction?

Subtraction is when we have a total and we subtract or take away an amount.

Multiple Choice

658-237=

• 401

• 240

• 421

• 184

Multiple Choice

431-326=

• 401

• 105

• 148

• 115

Multiple Choice

568-226=

• 749

• 178

• 305

• 342

Multiple Choice

814-263=

• 651

• 842

• 551

• 468

Multiple Choice

345-263=

• 82

• 182

• 708

• 514

Multiple Choice

546-267=

• 235

• 175

• 321

• 279

Multiple Choice

801-375=

• 235

• 426

• 574

• 416

Multiple Choice

603-328=

• 235

• 146

• 325

• 275

Multiple Choice

902-783=

• 119

• 146

• 281

• 743