1km = ?cm 1m = ?m 1cm = ?mm
1km = 1000cm 1m = 100m 1cm = 10mm
1t = ?kg 1kg = ?g 1g = ?mg
1t = 1000kg 1kg = 1000g 1g = 1000mg
⅛ = ?% ⅜ = ?% ⅝ = ?% ⅞ = ?%
⅛ = 12.5% ⅜ = 37.5% ⅝ = 62.5% ⅞ = 87.5%
1/20 = ?% 1/25 = ?%
1/20 = 5% 1/25 = 4%
40 min = ?h
30 min = ?h
20 min = ?h
15 min = ?h
40 min = 0.667h
30 min = 0.5h
20 min = 0.333h
15 min = 0.25h
Parallelogram area = ?
? = base x height
Trapezoid area = ?
? = ½ x height x (base1 + base2)
Circle area = ?
? = pi x radius^2
Sphere volume = ?
? = 4/3 x pi x radius^3
Rectangular prism volume = ?
? = width x length x height
Cylinder volume = ?
? = pi x height x radius^2
AR - Mnemonic
CPR
C - Common and colour
P - Position
R - Rotation and orientation
AR - Mnemonic
SCANS
S - Shape C - Colour/Fill A - Arrangement/Angles N - Number S - Symmetry
Number of common irregular shapes
Arrow = ? Star = ?
Arrow = 7 sides Star = 10 sides
Prime numbers
2, 3, 5, 7, 11, 13, 17, 19, 23