Given vectors $\boldsymbol{a,\;b}$, find $\boldsymbol{a\times b}$

rebelmaths

Is this number divisible by 100? Half the time the number is, half the time it isn't. Steps give the divisibility test and how to count the number of 100s.

Is this number divisible by 125? Half the time the number is, half the time it isn't. Steps give the divisibility test.

Is this number divisible by 250? Half the time the number is, half the time it isn't. Steps give the divisibility test.

Is this number divisible by 20? Half the time the number is, half the time it isn't.

Is this number divisible by 50? Half the time the number is, half the time it isn't. Steps give the divisibility test and a way to determine the number of fifties.

Is this number divisible by 25? Half the time the number is, half the time it isn't. Steps give the divisibility test and a way to determine the number of twenty-fives.

Given vectors $\boldsymbol{A,\;B}$, find $\boldsymbol{A\times B}$

A ball is thrown vertically upwards from a position above ground level. Find its greatest height, and the total time its in the air.

Given vectors $\boldsymbol{a,\;b}$, find $\boldsymbol{a\times b}$

rebelmaths

Calculate the time taken for a certain distance to be travelled given the average speed and the distance travelled.

Small, simple question.

Calculate a speed in m/s given distance and time taken, then convert that to km/hour

Multiplication and division of upper and lower bounds.

Calculate a speed in m/s given distance and time taken, then convert that to km/hour

Use a piecewise linear graph of speed against time to find the distance travelled by a car.

Finally, use the total distance travelled to find the average speed.

Is this number divisible by 2? Half the time the number is, half the time it isn't. Steps give the divisibility test.

Is this number divisible by 9? Half the time the number is, half the time it isn't. Steps give the divisibility test.

Is this number divisible by 3? Half the time the number is, half the time it isn't. Steps give the divisibility test.

Is this number divisible by 10? Half the time the number is, half the time it isn't. Steps give the divisibility test and a way to determine the number of tens.

Is this number divisible by 5? Half the time the number is, half the time it isn't. Steps give the divisibility test and a way to determine the number of fives.

Multiplication of $2 \times 2$ matrices.

Given vectors $\boldsymbol{A,\;B}$, find $\boldsymbol{A\times B}$

Multiplication of $2 \times 2$ matrices.

Linear combinations of $2 \times 2$ matrices. Three examples.

A couple of multiplication tables to be completed. Numbers to be multiplied are generated randomly. Single digit multiplication recall.

Find the determinant and inverse of three $2 \times 2$ invertible matrices.

Find the determinant of a $3 \times 3$ matrix.

Multiplication of $2 \times 2$ matrices.

Using simple substitution to find $\lim_{x \to a} bx+c$, $\lim_{x \to a} bx^2+cx+d$ and $\displaystyle \lim_{x \to a} \frac{bx+c}{dx+f}$ where $d\times a+f \neq 0$.

Multiplication of $2 \times 2$ matrices.