# Test: Decimals I - Challenging

Double click on maths expressions to zoom
Question 1:   Multiply: $11.115\cdot {10}^{7}$
$11,115,000$
$111,150,000$
$11,115,000,000$
$1,111,500$
Question 2:   Multiply: $0.0065\cdot {10}^{5}$
$6.5$
$6500$
$650$
$65$
Question 3:   Divide: $0.07654:{10}^{3}$
$0.0007654$
$0.007654$
$0.000007654$
$0.00007654$
Question 4:   Simplify: ${10}^{8}:{10}^{6}\cdot {10}^{2}:{10}^{3}$
$0.01$
$1000$
$10$
$100$
Question 5:   Multiply: $657.148\cdot {10}^{-7}$
$657148$
$6571480000$
$0.0000657148$
$0.000657148$
Question 6:   Divide: $0.02365:{10}^{-3}$
$0.0002365$
$0.00002365$
$23.65$
$2.365$
Question 7:   Round $0.0456$ to $2$ significant figures
$0.045$
$0.04$
$0.05$
$0.046$
Question 8:   Round to $4$ decimal places: $1.0249149$
$1.0250$
$1.0249$
$1.024$
$1.025$
Question 9:   Round to $4$ significant figures: $0.0456$
$0.0455$
$0.04560$
$0.0456$
$0.046$
Question 10:   Convert $\frac{3}{17}$ to decimal form and round to $4$ decimal places
$0.1766$
$0.1760$
$0.1764$
$0.1765$