HW Year 9 NA1 - NA2

L4

Jackson knows that 56 x 73 = 4088. What is 5.6 x 7.3?

• 0.4088

• 4.088

• 40.88

• 408.8

L5

By rounding each number to 1 significant figure calculate an estimate to $\frac{467.2\times36.1}{21.3\times5.4}$  .

(a)  

L5

Fatima is 4 years older than Bonnie but 3 years younger than Claire. The sum of all their ages is 38. How old is Fatima?

• 12

• 13

• 14

• 15

L6
 $\sqrt{300}$  is between

• 11 and 14

• 14 and 17

• 17 and 20

• 120 and 160

L4

The speed of wind is 103 879 metres per second. What is 3 quarter of this speed rounded to the nearest thousand?

(a)  

L5

Which two numbers multiply to

 $-18$  and add to  $-7$  ?

(a)  

L6
 $H=0.3\times10^5$  
 $G=5.92\ \times10^3$  
 $F=0.0386\times10^6$  

 $E=3.76\times10^4$ 

Arrange the numbers in ascending order 

• G, H, F, E

• F, G, H, E

• G, H, E, F
  

• H, E, F, G

• F, E, H, G

L6

Write $5.14\ \times10^{-6}$ as ordinary numerals. 

(a)  

L6

What is the following expression equal to?
 $\left(\sqrt{135+200}\right)^2$  

(a)