G4 Math Relay 1st Round

When you multiply decimals by decimals, the product gets smaller and smaller？ 

• True

• False

0.35 = 2 tenths and            hundredths.

• 0.5 tenths

• 0.15 tenths

• 15 tenths

• 5 tenths

What’s the sum of 3.47+6.52=?

• 8.89

• 9.89

• 9.99

• 99.9

A coffee maker costs $29.90, and a toaster costs $38.90. What’s is their total cost?

• $6.88

• $68.8

• #68.8

• 68.88

30.38-12.28=? 

• 18.10

• 17.10

• 16.10

• 18.2

270° is            a full turn. 

• 1/4

• 2/4

• 3/4

• 4/4

What’s degree of ∠xoz? 

• 90°

• 105°

• 85°

• 95°

小数0.68没有整数部分。

• True

• False

3 tens is equal 300 thousandths.  

• True

• False

All the decimals are smaller than whole numbers.  

• True

• False