More/Less
Esti Sums/Differences
Splits 1
Splits 2
100

What is 100 more than 3,420?

3,520

100

Find the ESTIMATED SUM of 23+65 by rounding to the nearest ten.

23---> 20
65---> 70

20 + 70= 90

100

Using the SPLIT STRATEGY, add 92+34.

Please show all work in each step!

92 + 34

90+2  +  30+4

90+30= 120

2+4= 6

126

100

Using the SPLITS STRATEGY, add 37 + 49.

Please show all work for each step!

37 + 49

30 + 7

40 + 9

70 + 16

86

200

What is 100 less than 4,982?

4,882

200

Find the ESTIMATED DIFFERENCE of 342 - 219 by rounding to the nearest ten.

342---> 340
219---> 220

340 - 220 = 120

200

Using the SPLIT STRATEGY, add 63 + 72.

Please show all work in each step!

63 + 72

60+3  +  70+2

60+70= 130
3+2=5

130+5= 135

200

Using the SPLITS STRATEGY, add 57 + 69.

Please show all work in each step!

57 + 69

50 + 7

60 + 9

110 + 16

126

300

What is 1,000 more than 5,865?

6,865

300

Find the ESTIMATED SUM of 198 + 276 by rounding to the nearest hundred. 

198---> 200
276---> 300

200 + 300 = 500


300

Using the SPLIT STRATEGY, add 256+327.

Please show all work in each step!

256 + 327

200+ 50 + 6

300+ 20 + 7

500 + 70 + 13

583

300

Using the SPLITS STRATEGY, add 387 + 622.

Please show all work in each step!

387 + 622

300 + 80 + 7

600 + 20 + 2

900 + 100 + 9

1,009

400

What is 1,000 less than 8,612?

7,612

400

Find the ESTIMATED DIFFERENCE of 7,892- 2,344 by rounding to the nearest thousand. 

7,893---> 8,000
2,344---> 2,000

8,000- 2,000= 6,000

400

Using the SPLIT STRATEGY, add 146 + 243.

Please show all work in each step!

146 + 243

100 + 40 + 6

200 + 40 + 3

300 + 80 + 9

389

400

Using the SPLITS STRATEGY, add 712 + 34.

Please show all work in each step!

712 + 34

700 + 10 + 2

0     + 30 + 4

700 + 40 + 6

746

500

What is one thousand more than three thousand, five hundred, seventy-nine in WORD FORM? (Spell as best as you can)

Four thousand, five hundred, seventy-nine

500

1. Find the ESTIMATED SUM of 9,932 + 2,312 by rounding to the nearest hundred.

2. Then, find the EXACT SUM of the original numbers. 

You must have BOTH answers correct.

9,932---> 9,900
2,312---> 2,300

9,900 + 2,300= 12,200

9,932 + 2,312= 12,244

500

Using the SPLIT STRATEGY, add 1,254 + 2,165.

Please show all work in each step!

1,254 + 2,165

1,000 + 200 + 50 + 4

2,000 + 100 + 60 + 5

3,000 + 300 + 110 + 9

3,419

500

Using the SPLITS STRATEGY, add 4,123 + 3,214.

Please show all work in each step!

4,123 + 3,214

4,000+100+20+3

3,000+200+10+4

7,000+300+30+7

7,337

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