Number Sense
Addition/Subtraction
Multiplication
Division
Decimals/Fractions
100
What is "rounding"?
What is rounding means reducing/increasing the digits in a number while trying to keep it's value similar. The result is less accurate, but easier to use.
100
28+46=
What is 74
100
5 x 7 =
What is 35
100
A number is divisible by 2 if it is_____ (ends in...)
What is ends in 0, 2, 4, 6 or 8
100
1.61 + 0.69 =
What is 2.3
200
This is the "standard form" of the number 946. What is the "expanded version?"
What is 900 + 40 + 6
200
5321+768=
What is 6089
200
9 x 7 =
What is 63
200
A number is divisible by 6 if it is divisible by ___ AND ___
What is 2 AND 3 e.g. 8 964 is a multiple of 6 because it’s even and its digits add to 27
200
1.23-0.24 =
What is 0.99
300
What are "divisibility rules?"
What is: a divisibility rule is a shorthand way of discovering whether a given number is divisible by a fixed divisor without performing the division, usually by examining its digits. Ex: A number is divisible by 4 if the number formed by the last two digits is divisible by 4. Ex: 316 is divisible by 4 since 16 is divisible by 4.
300
7455-847=
What is 6608
300
490 x 38 =
What is 18620
300
54/9 =
What is 6
300
5.23+0.31-2.76 =
What is 2.78
400
A number is divisible by 5 if the last digit is either ____ or ____.
What is 0 or 5
400
9897-7208=
What is 2689
400
3598 x 80 =
What is 287840
400
108/12
What is 9
400
0.5 × 0.44 =
What is 0.22
500
A number is divisible by 9 if the sum of the digits is divisible by _____.
What is 9. Ex: 549 is divisible by 9 since the sum of the digits is 18 (5+4+9=18), and 18 is divisible by 9.
500
111-60+7+8-9+22-17-4=
What is 58
500
3 x 21 x 50 =
What is 3150
500
144/48 =
What is 3
500
15 ÷ 0.6 =
What is 25
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