Show:
WORD
ROUNDING
FORMS & COMPARING
10 TIMES as MANY
ADD & SUBTRACT
100

If Mrs. Schultz has 54 penguins and Mrs. Ruckstaetter gives her 27 more. How many penguins does Mrs. Schultz have now? 

Mrs. Schultz has 81 penguins. 

100

Round to the nearest 100:

490

500

100

Compare: <, >, =

345 _____ 354

345 < 354

100

13 x 10 =

130

100

191 + 307=

498

200

If Mr. Casten drives 114 miles and Mrs. Rizzo drives 141 miles more than Mr. Casten, how many miles do they both drive in all? 

114 + 141 = Rizzo 

Rizzo drives 155 miles

114 + 155 = Total

They both drive 269 miles in all. 

200

Round to the nearest 100:

5,678

5,700

200

Compare: <, >, =

 600,015 ____ 60,015

600,015 > 60,015

200

24 times ten

240

200

398 - 172=

226

300

The bakery sold 1,323 cupcakes in one day. If they sold 765 cupcakes in the morning, how many cupcakes did they sell the rest of the day?

1,323 - 765 = 558

They sold 558 cupcakes the rest of the day.

300

Round to the nearest 1,000:

54,432

54,000

300

Compare: <, >, =

500,000+40,000+90+3____500,000+90,000+400+3

540,093 < 590,403

300

Ten times as many as 362

3,620

300

2,458 + 3,171 = 

5,629

400

Tank A holds 876,500 gallons of water. Tank B holds 909,867 gallons of water. How much less water does Tank A hold than Tank B?

909,867 - 876,500 = 33,367

Tank A holds 33,367 gallons less than Tank B.

400

How do you know that 98,876 rounded to the nearest ten thousand is 100,000?

98,876 rounded to the nearest 10,000 is 100,000 because the number next to the ten thousand's place is 5 or above. (It gives it a shove!)

400

Compare: <, >, =

9 hundred thousands 8 thousands 9 hundreds 3 tens _______

908,930

908,930 = 908,930

400

3,490 x 10 =

34,900

400

7,654 - 4,567 =

3,087

500

Mrs. Brown's class read 2,543 pages the first week and 3,452 more pages in the second week. After the third week, they had read 11,234 pages. How many pages did they read the third week?

2,543 + 3,452 = Week 2

Week 2 = 5,995 + 2,543 = 8,538

Weeks 1 & 2 =8,538

11,234 - 8,538 = 2,696

They read 2,696 pages the third week. 

500

Round the following to the nearest thousand:

eighteen thousand, eighteen

18,018 rounded to the nearest thousand is 18,000.

500

Compare: <, >, =

5 hundreds 5 ten thousands 9 ones _____

6 ten thousands 5 hundreds 9 ones

50,909 < 60,509

500

Ten times as many as 56,384

563,840

500

30,003 - 25,327 = 

4,676