Order of operation
Solve: 100- 25 x 2
50
Which is greater?
3/5 or 2/10
3/5
What is the given number in figures.
Nine hundred ninety-nine thousand nine hundred ninety-nine
999 999
What is 72 ?
49
Add mentally 299 + 299.
598
Solve: (17+5)+(2x11)
44
Tiny says:
“When I multiply 4/5 by 3, I should also multiply the denominator by 3.”
Do you agree with Tiny? Explain your answer.
No, I do not agree with Tiny.
When we multiply a fraction by a whole number, we only multiply the numerator, not the denominator.
A house cost AED 283 380 and Bungalow cost
AED 345 450. How much more does bungalow cost than a house?
The bungalow costs AED 62,070 more than the house.
What is the highest common factor of 18 and 30?
The highest common factor (HCF) of 18 and 30 is 6.
Divide 420 by 6 mentally
70
Solve:7 + 4 x 4 - 3
20
A ribbon roll had 5/6 metre.
Sara used 1/3 metre for a project.
How much ribbon is left?
1/2 meter
What is the value of the digit 4 in the below number?
2 456 003
400 000
What is 43 ?
64
Calculate 78 - 32 mentally.
using any strategy 78 - 32 = 46
Add bracket to make the calculation correct:
6+7 x 2 = 26
(6+7)x2 = 26
Simplify 45/60
3/4
Round the below number to nearest 10000 and 100000.
1 255 567
Nearest 10 000 - 1 260 000
Nearest 1 000 000 - 1 300 000
93812 is divisible by 4 . How do you know without calculating?
Last 2 digit of a number is a multiple of 4 so the number is divisible by 4.
What is 100 less than 1 000 000 ?
999 900
Solve: 7 ( 2 + 5 )
Leena walked 3 1/2 km in the morning and 2 3/4 km in the evening.
How far did she walk in total?
6 and 1/4 kilometer
What is -6 + 5 ?
-1
Same says: "Since 5 is a prime number 25 is also a prime number" Is he right?
No , 25 is not a prime which has more than 2 factors.
Multiply:39 and 40.
So, the estimated product of 39 and 40 using rounding is 1600.
1600 - 40 = 1560.