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Using a protractor

Put the protractor’s centre mark on the corner of the angle and its base line along one arm. Read the scale that starts at 0 on that arm: the inner one or the outer one. Where an arm is shorter than the protractor, lay a ruler along it to carry the line out to the scale. Measuring angles usually comes in grade 4.

Acute, right and obtuse

An acute angle is less than 90 degrees, a right angle is exactly 90 degrees, like the corner of a page, and an obtuse angle is between 90 and 180 degrees. Guess the size first: a guess near the answer shows which scale to read.

Print it at actual size

An angle is the same at any size, so these sheets work at any scale, but print at Actual size or 100% to keep the arms long enough to measure. A printed protractor works if you print it at 100% too.

Related printables 12

Counting money worksheets

Count the coins and write the total in cents: pennies, nickels, dimes and quarters drawn at their real size, six groups a page, totals under a dollar, with the answers on the key. Leave out the quarters for an easier sheet. New coins each time.

Number bonds worksheets

Number bonds to 10: the whole in the top circle, its two parts below, and one of the three left empty to fill in. Choose the largest whole, up to 100, and how many bonds; the answer key is on the last page.

Place value worksheets

Place value practice with numbers of 2 to 5 digits: half the questions ask what one digit is worth, as the 4 in 3,482 is worth 400, and half ask for the number in expanded form, as 3,000 + 400 + 80 + 2. The answer key is on the last page.

Measuring length worksheets

Six lines drawn at their true length, to measure with a ruler from the left end and write down to the nearest half inch, then two lines to draw at a given length, with a ruler to cut out at the foot of the page and the answers on page 2. Choose whole, half, quarter or eighth inches, or whole or half centimetres.

2D shapes worksheets

Eight flat shapes a page to name, and to count the sides and corners of: triangle, square, rectangle, rhombus, trapezoid, pentagon, hexagon, octagon, circle and oval, with the answers on the key. On the harder sheet each shape is turned and the triangles and rectangles change shape, so the name rests on the sides. New shapes each time.

3D shapes worksheets

Eight solid shapes a page to name and count the flat faces of: cube, rectangular prism (cuboid), triangular prism, square pyramid, cylinder, cone and sphere, drawn with the edges at the back dashed. On the harder sheet, prisms and pyramids to count the faces, edges and vertices of. Answers on the key; new shapes each time.

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Print and assemble

Use the same paper size in the PDF and printer settings. Choose Actual size or 100%. Print a sample before making copies.