Mental Math

A bag of sweets weighs 20g.

How many would weigh exactly 1 kg?

• 25 bags

• 49 bags

• 50 bags

• 5 bags

Tags

CCSS.5.MD.A.1

CCSS.5.NBT.B.6

In a school of 120 children only 1/3 are girls. How many boys are in the school?

• 97 boys

• 80 boys

• 75 boys

• 90 boys

Tags

CCSS.5.NBT.B.6

CCSS.5.NF.B.3

A sack of letters weighs 3 kg (without the weight of the sack). Each letter weighs 20g. How many letters are in the sack?

• 100 letters

• 120 letters

• 60 letters

• 150 letters

Tags

CCSS.5.MD.A.1

CCSS.5.NBT.B.6

A race lasting 3 hours and 40 minutes ended at 16:50. What time did the race start?

• 13:10

• 13: 20

• 14:10

• 14: 20

Tags

CCSS.5.MD.A.1

How many kilograms of sugar must be added to 2.34 kg to make 6 kg?

• 2.66

• 2.76

• 3.66

• 3.76

Tags

CCSS.5.NBT.B.7

A dress is £40. There is a 10% discount off the dress. How much was the price of the dress?

• £20

• £30

• £36

• £44

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.3

Which fraction is more than ¹⁄₄?

• ²⁄₈

• ³⁄₁₂

• ⁶⁄₂₀

• ²⁵⁄₁₀₀

The temperature is -8^o. If it rises 3^o and then falls 5°. what is the temperature now?

• -11^o

• 11^o

• -5^o

• -10°

A rectangle has a perimeter of 38cm. The shortest sides are 7cm. What length are the two longest sides?

• 12cm

• 14cm

• 21cm

• 28cm

The jug of lemonade contained 2 litres. Gran drank 265ml. How much lemonade was left?

• 1.735 litres

• 17.35 litres

• 173.5 litres

• 1,735 litres