Mental Maths
8 x 8=
64
85÷ 17=
5
1/2 1/3
1/2 > 1/3
Find an equivalent fraction for 3/5
E.g. 6/10 9/15 12/20
Ms Jill made 47 gingerbread cookies which she will distribute equally in tiny glass jars. If each jar is to contain six cookies each, how many cookies will not be placed in a jar?( 3 parts are needed: Number sentence, column form and answer sentence)
Answer: 47 ÷ 6 = 7 jars R 5 cookies
5 cookies will not be placed in a jar.
13 x 30 =
390
135÷ 15=
9
5/8 5/6
5/8 < 5/6
True or False :
They are equivalent fractions: 3/8 and 36/96
Ms Terri also baked oatmeal cookies for her classmates. If she can place 12 cookies on a tray at a time, how many trays will she need to prepare 276 oatmeal cookies at a time?
Answer: 276 ÷ 12 = 23 trays
She will need 23 trays.
150 x 40
6000
805÷ 36=
22 R 13
4/16 2/8
4/16 = 2/8
True or False :
They are equivalent fractions: 4/36 and 1/8
False
When the quotient of 5 ? 6 ÷ 53 is a two-digit number, the smallest number that can be filled in the is ( )
3
320 ÷ 2 =
160
928 ÷ 17=
54 R 10
4/8 1/5
4/8 > 1/5
5/7 = ?/21
15
Jason made 589 lollipops on March. On average, how many lollipops did he make per day?
589 ÷ 31 = 19 lollipops
24000 ÷ 60=
400
1374÷ 458=
3
2/5 1/3
2/5 > 1/3
16/?=8/12
24
Ms Anna wants to buy toy cars for students. She has $840. Each toy car costs $15. How many toy cars can Ms Anna buy?
*If there is a “Big Sale” promotion in the shop. The price of each toy car can be $3 cheaper than the original price. How many toy cars can Ms Anna buy now?
840 ÷ 15 = 56 toy cars
* 840 ÷ (15-3) = 70 toy cars