Rounding
Round 78 to the nearest ten.
80
Using the split counting method, show your work and answer this equation: 3 x 5
2x5 + 1x5 =
10 + 5 = 15
Multiplying by 10 is really easy! What is the rule when you multiply by 10
Multiply the factor by 1 and add a 0
Show the doubling strategy to solve.4x3
2x3 = 6
4x3 = 12 or 6+6
A bar graph shows the number of pets owned by students. If 10 students have dogs, 7 have cats, and 5 have birds, how many students have pets in total?
22
Round 3,652 to the nearest thousand.
4000
Using the split counting method, show your work and answer this equation: 3x9
2x9 + 1x9 =
18 + 9 = 27
What is a fact family?
A group of related math facts that involve the same numbers.
Show the doubling strategy to solve. 6x7
3x7= 21
6x7= 21+21 =42
In a survey, students were asked their favorite fruit. If 15 chose apples, 10 chose bananas, and 5 chose oranges, how many more students chose apples than oranges?
10
Round 549 to the nearest hundred.
500
Using the split counting method, show your work and answer this equation: 7 x 5
5x5 + 2 x 5 =
25 + 10 = 35
When you multiply anything by zero what does it equal ?
zero
Show the doubling strategy to solve: 8x9
2x9= 18+18
4x9 = 36+36
8x9=72
A pictograph shows 3 stars, and each star represents 4 books. How many books are represented in total?
12
A school library has 8,276 books. Round this number to the nearest thousand.
8000
Using the split counting method, show your work and answer this equation: 7 x 7
5x7 + 2 x 7 =
35 + 14 = 49
What is 9 x 9
81
Show the doubling strategy to solve 8x3
2x3 = 6 +6
4 x3 = 12 +12
8x3= 24
A pie chart shows that 40% of students prefer basketball, 35% prefer soccer, and 25% prefer hockey. If 80 students were surveyed, how many prefer hockey?
20
A car travels 15,743 kilometers in a year. Round this number to the nearest ten thousand.
20,000
Using the split counting method, show your work and answer this equation: 7 x 9
5x9 + 2 x 9
45 + 18 = 63
A bakery makes 9 trays of cookies each day, and each tray holds 9 cookies. If the bakery is open for 9 days, how many cookies do they bake in total?
729
On Sports Day, Grade 4 ran 12 laps around the track. It took them 10 minutes to finish one lap. How many minutes did they run?
120 minutes
A tally chart shows students’ favorite colors: 8 chose blue, 12 chose red, 7 chose green, and 3 chose yellow. If you combine the number of students who chose blue and green, how many chose these colors?
15