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Rounding (Nearest Hundred)
Rounding (Nearest Ten)
Round to nearest ten to estimate the sum
Round to nearest hundred to estimate the sum
Identify the Property (associative, commutative, and Identity)
100

Round 812 to the nearest hundred 

800

100

Round 23 to the nearest tens place 

20

100

25+72

30 + 70 = 100

100

450 + 330 = 

500 + 300 = 800

100

3+5=5+3 

Commutative Property 

200

Round 450 to the nearest hundred 

500

200

Round 463 to the nearest tens place

460

200

124+55

120 + 60 = 180

200

220 + 560 = 

200 + 600 = 800

200

(3 + 4) + 5 = 3 + (4 + 5) 

Associative Property 

300

Round 788 to the nearest hundred 

800

300

Round 55 to the nearest tens place

60

300

57+52

60 + 50 = 110 

300

468 + 238 = 

500 + 200 = 700

300

5+0=5

Identity Property 

400

Round 555 to the nearest hundred 

600

400

Round 222 to the nearest tens place

220

400

345+88

350+90 = 440

400

347 + 278 = 

300 + 300 = 600

400

(8 + 9) + 10 = 8 + (9 + 10) 

Associative Property 

500

Round 96 to the nearest hundred 

100

500

Round 87 to the nearest tens place

90

500

278+148

280+150 = 430

500

898 + 797 = 

900 + 800 = 1,700 

500

8+9=9+8 

Commutative Property