Rounding Decimals
Big ideas
Add it up! or Take it out!
More or Less
Word!
100
What is 3.4 rounded to the nearest ones? ¿Qué es 3.4 redoneado a las unidades?
3.0
100
Are decimals more than one whole, less than one whole, or equal to one whole? Los números decimales son ¿más que una unidad, menos que una unidad o igual a una unidad?
Less than one whole
100
3.42 + 342
245.42
100
Estimate 34.5 + 4.81 Estima 34.5 + 4.81
40
100
Tommy has 222 more turtles than Dinhora. If Dinhora has 94 turtles, how many does Tommy have?
316 turtles
200
What is 365 rounded to the nearest hundred? ¿Qué es 365 redondeado a la centena más cercana?
400
200
Is 2 x 2 x 3 x3 equal to 6 x 6? 2 x 2 x 3 x 3 es igual a 6 x 6 ¿sí o no?
Yes
200
34.50 - 3.5
34
200
Estimate 9,621 - 875
9,100
200
Uriel just won the lottery! If he won $457,284,921, approximately how many million dollars did he win. ¡Uriel tocó la loteria! Si ganó $457,284,921 ¿aproximadamente cuántos milliones de dolares ganó?
5 million
300
What is 345,621 rounded to the nearest ten thousands? ¿Qué es 345,621 redondeado a la decena de millar más cercana?
350,000
300
Is 3/100 equal to .3? 3/100 es igual a .3 ¿sí o no?
no
300
398 - 9.4
388.6
300
Estimate: 582.3 - 362
182
300
Bianey has a crazy dog that is ALWAYS eating socks and pencils. Her father has decided to build a fence to keep the dog out of the house. If the fence is a rectangle with one side that measures 34.5 feet and another side that measures 5.21 feet, what is the perimeter of the fence?
39.71 feet
400
What is 345,231.762 rounded to the nearest tenth? ¿Qué es 345,231.762 redondeado a la décima más cercana?
345,231.8
400
1 2/10 = 13/10
no
400
5341.5 - 1878.9
3,462.6
400
Estimate: 134,567 + 908
135,900
400
Ramses has decided to pack it up and move to the Galapagos Islands to study the hunting habits of the Komodo Dragon. If the flight from San Antonio to Ecuador takes 6.5 hours, and the flight from Ecuador to the Galapagos Islands takes 3 hours, how many minutes did Ramses fly in total?
570 minutes
500
What is 908,702.356 rounded to the nearest hundredth? ¿Qué es 908,702.356 redondeado a la céntesima más cercana?
908,702.36
500
Does number order matter in division and multiplication? ¿Importa el ordén de los números en la división y la multiplicación?
No in multiplication. Yes in division.
500
3567.234 - 41211.11
IT can't be done!
500
135 + 3.45 + 18 - 129.2
31
500
Ms. Henriquez is going to Switzerland to sample the finest chocolate in the world. Her hotel costs $165.40 per night and her plane ticket cost $1,460.99. If she stays for 7 days and spends $43.15 a day on food, how much did she spend?
2755.44