Place Value
Addition
Subtraction
Rounding
Strategies
100

What place value is the 3 in this number? 

1,536,879

Ten Thousands 

100

578+124

702

100

152-25

127

100

845 to the nearest ten

850

100

What strategy does this show?

899+75 = 900+74

Give and take

200

What place value is the 4 in this number? 

5,479,364

Hundred Thousands

200

135+94

229

200

652-131

521

200

938 to the nearest hundred

900

200

What strategy does this show?

2,456-495 = 2,456-400-90-5

Taking away

300

What place value is the 8 in this number?

65,479,283

Tens

300

379+125

504

300

8,356-2,215

6,141

300

5,601 to the nearest thousand

6,000

300

What strategy does this show?

3,896-3,754 --> 3,754+100+40+2 --> 142

Finding the difference

400

What place value is the 5 in this number?

647,145,927

Thousands

400

2506+4971

7,477

400

47,891-6,999

40,892

400

189,572 to the nearest ten-thousand

190,000

400

What strategy does this show?

8,742-3,995 = 8,747-4,000

Constant Difference

500

What place value is the 2 in this number?

127,964,348

Ten Millions

500

6,891,462+3,317,588

10,209,050

500

5,263,526-525,156

4,738,370

500

8,492,659 to the nearest hundred-thousand

8,500,000

500

What strategy does this show?

1,243

+355

1,598

Addition algorithm

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