Number Sense
2,379,041,685
Which digit is in the millions place value?
nine
569 x (7 - 7) + 14
14
Calculate the sum of lengths: 21 m 13 cm, 33 m 55 cm and 45 m 6 cm.
99 m 74 cm.
Which side of a turkey has the most feathers?
The outside
I add six to eleven, and get five. Why is this correct?
When it is 11 a.m., adding six hours makes it 5 p.m.
If Karris has 2.3 pounds of candy and Bria has ten times the amount of candy, how many pounds of candy does Bria have?
23 pounds
40 - 2 + 5 x 4
58
If you wanted to lay carpet in a room, would you need to find the length, perimeter, or area of the room?
area
What always goes to bed with its shoes on?
A horse
One brother says of his younger brother: “Two years ago, I was three times as old as my brother was. In three years time, I will be twice as old as my brother.” How old are they each now?
He must be 17, and the younger brother 7. Two years ago, they were 15 and 5 respectively, and in three years, they will be 20 and 10.
Of the following numbers, which one is composite? 2, 3, 4, or 5
4
40 - (2 + 5) x 4
12
When you are labeling the volume of a prism, should you label it in inches, inches², or inches³?
inches³
What becomes shorter when you add two letters to it?
Short
Old Granny Adams left half her money to her granddaughter and half that amount to her grandson. She left a sixth to her brother, and the remainder, $1,000, to the dogs’ home. How much did she leave altogether?
Adding one half, one quarter and one-sixth tells us that the total is a fraction of twelfths (2 + 4 + 6 = 12). You can also think about it as 6/12, 3/12, 2/12, which equals 11/12. If the remainder is $1,000, that must be one-twelfth, so the total is $12,000.
How many numbers between 600 and 800 (inclusive) are multiples of 2 and 5?
21
(40 - 2) + 5 x 4
58
Beena bought 3 kg 760 grams of wool to make a carpet. How much more wool does she need to make the weight 4 kg?
240 grams of more wool is required.
What is seen in the middle of March and April?
The letter "r"
If a hen and a half lay an egg and a half in a day and a half, how many eggs will half a dozen hens lay in half a dozen days?
Two dozen. If you increase both the number of hens and the amount of time available four-fold (i.e., 1.5 x 4 = 6), the number of eggs increases 16 times: 16 x 1.5 = 24.
Using only addition, add eight 8s to get the number 1,000.
888 + 88 + 8 + 8 + 8 = 1,000
22 x (3 + 3)
36
Vinu and Shan together weigh 72 kg 350 g. If Vinu weighs 39 kg 185 g, what is Shan’s weight?
Shan’s weight is 33 kg 165 g.
Look at my face, I am somebody. Look at my back, I am nobody. What am I?
A mirror
My twin lives at the reverse of my house number. The difference between our house numbers ends in two. What are the lowest possible numbers of our house numbers?
The lowest possible numbers for the houses are 19 and 91. The difference is 72.