Addition
Subtraction
Word Problems
Rounding
Measurement
100
Show your strategy.
429+212=
641
100
Show your strategy.
493-236
257
100
An dolphin weighs 132 kilograms MORE than an third grader. If the third grader weighs 49 kilograms, how much does the dolphin weigh?
The dolphin weighs 181 kilograms.
100
Round 74 to the nearest 10 and 100.
74 to the nearest 10 is 70.
74 to the nearest 100 is 100.
100
A chair weighs about _______ kilograms.
5 kilograms OR 50 kilograms
5 kilograms
200
Show your strategy.
562+399
961
200
Show your strategy.
672-218
454
200
George wants to estimate the problem.
537-489
Should George round both numbers to the nearest 10 or 100? Explain.
George should round to the nearest 10 because if he rounded to the nearest 100, both the numbers would be 500 and the answer would be 0.
200
Round 178 to the nearest 10 and 100.
178 to the nearest 10 is 180.
178 to the nearest 100 is 200.
200
What is the weight of these carrots?
1 kilogram or kg
300
Show your strategy.
629+178
807
300
Show your strategy.
800-475
325
300
Mrs. Langston and Mrs. Lamb want to organize the desks in rows of 6. They have 24 desks. How many rows can they make?
They can make 4 rows.
300
Which two 3-digit numbers that round to the same hundred?
212
358
421
278
358 and 421 both round to 400.
300
How much do the mushrooms weigh?
300 grams or g
400
Show your strategy.
726+248
974
400
Show your strategy.
700-527
173
400
Sally earns $15 for mowing the lawn and $15 for babysitting. She mowed 3 lawns and babysat 3 times. How much money did she earn?
She earned $90.
400
Round to the nearest 10 and 100.
812
656
812 to the nearest 10 is 810.
812 to the nearest 100 is 800.
656 to the nearest 10 is 670.
656 to the nearest 100 is 700.
400
Which one holds more liquid: a mug or a bathtub?
Bathtub
500
Show your strategy.
569mL+243mL
812mL
500
Show your strategy.
900kg-472kg
428kg
500
Jerry counts the tiles on the school ceiling. He counts 6 rows of 7 tiles. There are 13 tiles cracked. How many tiles are NOT cracked?
There are 29 tiles not cracked.
500
Round each number to the nearest 10 and 100.
540
903
398
550 to the nearest 10 is 550.
550 to the nearest 100 is 600.
903 to the nearest 10 is 900.
903 to the nearest 100 is 900.
398 to the nearest 10 is 400.
398 to the nearest 100 is 400.
500
What temperature does the thermometer read?
103 degrees