Maths Flashcards
Multiply decimals. 17.4 x 15 =
261
24.7 x 24 =
592.8
29 x 24.1 =
698.9
4.2 x 8.9 =
37.38
Dividing decimals 28.08/9
03.12
85.32/6
14.22
97.28/4
24.32
44.8/8
05.6
Put these in order 0.23, 2.3, 3.02, 3.2, 2.32, 0.32, 3.23
0.23, 0.32, 2.3, 2.32, 3.02, 3.2, 3.23
Divide by whole number. 1.26 / 0.14 =
Multiply both by 100 126 / 14 = 9
Rounding to decimal places. Round 6.8352 to 2 decimal places
6.84
7.998 to 2 decimal places
8.00
6.34 to 1 decimal place
6.3
Fractions and decimals. What is T and R
Terminating decimal and recurring decimal
What is 1/2 in decimal
0.5 Divided 10 by the denominator, to give 5. Then multiply by the actual nominator, 1. Then divide by 10. = 0.5
Write 1/5 as a decimal
10 as the “nominator” is divided by 5 = 2. Multiply by the actual nominator. Then divide by 10 as in move the decimal point backward one place = 0.2
What is 1\9 in long division
0.1 1 1 1
9 /—————
/ 1.1 1 1 1
0 0 0 0
Negative numbers. What does a minus - a minus equal?
A plus
3-3=
O
3 - - 3 =
3+3 = 6
3 + -3=
0
-3 + -3 =
-6
What is the rule for multiplying plus and minus
If the signs are the same the answer is positive. If the signs are different the answer is negative
What is 3 x 7 =
+21
-3 x -7 =
+21
-3 x 7 =
- 21
3 x -7 =
-21
Indices what is (-2) 2
-2 x -2 = 4
-2 2
2 x 2 = 4 but minus so the answer is -4
Simplify (X+2) (x+5)
X[squared]+5x+6
Factorise x[squared]+3x+2
(X+2)(x+1
Factorise x[squared]-7x+12
(x-3)(x-4)
