Place value / Rounding
write the place value of digits in the given numbers
a) 103,455.98 place value of 8
b) 34.09527 place value of 2
c) 41379.09 place value of 4
a) hundredths
b) ten thousandths
c) ten thousands
a) 0.389 × 100
b) 712 ÷ 10
c) 4.22 ÷ 10
a) 38.9
b) 71.2
c)0.422
Calculate:
a)-14 + -13
b) -7 + 15
c) 23 + -15
a) -27
b) 8
c) 8
Calculate:
-12 + 23 - -7 =
15 - 13 + -6 =
18
-4
Tell the divisibility rule for 4
Tell the divisibility rule for 3
Tell the divisibility rule for 5
Tell the divisibility rule for 6
any correct statement as answer
Round the following numbers to given accuracy:
a) 45,678 to the nearest 100s
b) 87.0934 to the nearest hundredth
c) 0.89321 to the nearest tenths
a) 45,700
b) 87.09
c) 0.9
Fill in the gapes with correct 10 , 100 or 1000;
a) 6.12 × ___ = 6120
b) 21 ÷ ___ = 0.21
c) 730 ÷___ = 7.3
a)1000
b)100
c)100
Calculate:
a) -2 - -5 =
b) 5 - 8 =
c) 12+ -25 =
b) -3
c) -13
Calculate :
10 × 5 − (−6) 2
−8 + 2 × 42
14
24
Find factor of following numbers
a) 45
b) 27
c) 18
a) 1, 3, 5, 9, 15, 45
b) 1, 3, 9, 27
c) 1, 2, 3, 6, 9, 18
Round to the given accuracy
a) 45.89 to 1 d.p
b) 1.9821 to the nearest whole number
c) 2.9071 to 2 d.p
a) 45.9
b) 2
c) 2.91
In a supermarket lemons are sold in bags of 10 for $3.50. How much does each lemon cost?
$0.35
Calculate :
a) 6 − 7 − 3
b) −4 − 3 − 3
c) 10 − 25
a) -4
b) -10
c) -15
(10 ÷ (−5) − (−2)) × (−3)3
0
Find the three consecutive multiples of following numbers
a) 17
b) 23
c) 22
a) 17 , 34, 51
b) 23 , 46 , 69
c) 22, 44 , 66
Sham has a parcel that weighs 2 kilograms and 7 hundredths of a kilogram. Write the weight of Sham’s parcel as a decimal number?
2.07
Write these decimal numbers in order of size, starting with the smallest.
3.46, 2.6, 3.31, 3.49
2.6, 3.31, 3.46, 3.49
calculate:
a) 44 ÷ -11 =
b) -6 × 12 =
c) 25 × -2 ÷ -10 =
a) -4
b) -72
c) 5
(−3)3 − 2 + 8 ÷ (−8)
4 × (−8) + 6 − (−2)3
-30
-18
Find the HCF of following numbers
a) 24 , 36
b) 100 , 75
c) 45 , 75
a) 6
b) 25
c) 15
Write 3 example to the number that located between
5 and 6
any correct
Alexi thinks of a number. He multiplies his number by 10, and then divides the answer by 100. He then multiplies this answer by 1000 and gets a final answer of 45. What number does Alexi think of first?
0.45
Estimate the sign of the expressions whether is it positive or negative
a) -2 × 3 × -9 × 12 × -3
b) -2 × -4 × -9 × -10 × 98 × -7
c) -4 × 4 × -9 × -8 × -10 × 5
a) negative
b) negative
c) positive
square root of ((−5)2 − 2 × (−9) + 6)
7
Find the LCM of the following numbers
a) 12 , 10
b) 32, 20
c) 18 , 27
a) 120
b) 160
c) 54