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Rounding / Estimating
word problems /standard algorithm
comparing numbers using < > =
10 times
or 10 less
Expanded Notation
100

Round 4,100 to the nearest 1,000 on the number line.

4,000

100

 421 + 358 = ?

421 + 358 = 779

100

34,000 ___ 37,000

34,000 < 37,000

100

10 times

3 hundreds 2 tens 

what is your standard form number?

3,200

100

write this number in standard form.

(4 x 100) + (8 x 10) + (2 x 1)

482

200

round 14,563 to the nearest 1,000.

15,000

200

86,456 - 32,898 = ?

86,456 - 32,898 = 53,558

200

405,699 ___ 405,677

405,699 > 405,677

200

(1/10) 10 less

4 ten thousands 2 tens 

what's my number in standard form?

4,002

200

Write this number in expanded notation.

52,450

(5 x 10,000) + (2 x 1,000) + (4 x 100) + (5 x 10)

300

Round 24,988 to the nearest ten thousand.

20,000

300
A pair of hippos weighs 5,201 kilograms together. The female weighs 2,038 kilograms. How much does the male hippo weigh?

The male hippo weighs 3,163

300

Order from greatest to least.

67,458      1,458,899      6,232

1,458,899     67,458     6,232

300

(1/10) 10 less

45,900

what's my number in standard form?

4,590

300

Write this number in standard form.

(6 x 100,000) + (4 x 1,000) + (1 x 10) + (6 x 1)

604,016

400

estimate these numbers to the nearest 100 then solve.

334 + 595 = ?

800

400

On Saturday 97,478 people bought tickets for the carnival. 40,592 of those people wore red and the rest wore pink. How many more people wore pink than red to the carnival?


16,294

400

6 ten thousands 5 thousands 2 tens 5 ones ___ 68,456

6 ten thousands 5 thousands 2 tens 5 ones <68,456

400

10 times

2 thousands 4 hundreds 6 tens

what is your standard form number?

24,600

400

Write this number in expanded notation.

400,035

(4 x 100,000) + (3 x 10) + (5 x 1)

500

Erica has saved 4,330 for her new car that costs 9,679. About how much more money does erica need to save for her car?

estimate and solve 

6,000

500

A ice cream shop sold 12,789 chocolate cones and 9,324 cookie dough cones. The shop sold 1,078 more peanut butter cones than chocolate cones. What was the total number of ice cream cones sold?

35,980

500

(3 x 100,000) + (5 x 10,000) + (1 x 1,000) + (8 x 100) ___  351,800

(3 x 100,000) + (5 x 10,000) + (1 x 1,000) + (8 x 100)   =  351,800

500

(1/10) 10 less

649,877

what's my number in standard form?

64,987

500

Write this number in standard form.

(3 x 1,000,000,000) + (2 x 100,000,000) +              (6 x 10,000,000) + (9 x 1,000,000) + (8 x 100,000) + (8 x 10,000)

3,269,880,000