Thousandths introduced as tenths of a hundredth block.
Use a number expander to show 0.357 as 357 thousandths.
Add and subtract thousandths without regrouping.
Find numbers one thousandth before and after a number.
Count in thousandths by 1s, 2s and 5s in any number.
Compare numbers with thousandths, allowing for ordering and sequencing.
Add thousandths with regrouping.
Subtract thousandths with regrouping.
Use an abacus to compare decimals to thousandths
Regroup decimals such as 0.357 as 30 hundredths and 57 thousandths.
Game that can be played using the thousandths random dice roller on Professor Pete’s Decimals software (separate purchase needed).
46 slides. Extends the reading and writing of number into the trillions and beyond. 4 lessons. Includes decimals to thousandths and fractions. Interactive PowerPoint Think Bubble Math 509
4 pp. Writing number into the millions. Worksheet accompanies “Reading and Writing Numbers to Millions” [PowerPoint TBM 509]
81 slides. Numbers in the billions and beyond, also decimals beyond thousandths. Uses base ten blocks and place value charts, real world examples, rounding and calculating. Interactive PowerPoint Think Bubble Math 609
4pp. Extreme numbers worksheet. Worksheet accompanies “Extreme Numbers” [PowerPoint TBM 609]
75 slides. Thousandths linked to common fractions. Includes explorations with folded paper, division of shapes, base ten blocks and number lines. PowerPoint TBM508
4 pp. Worksheets to accompany ‘Thousandths Introduced’ [PowerPoint TBM508]
47 slides. Multiplying and dividing by 10, 100 and 1000 including number with decimals. Interactive PowerPoint Think Bubble Math 601
1 p. Template to construct a number slide with 10 places millions to thousandths. Accompnaies “Multiply and Divide by 10, 100, 1000” [PowerPoint TBM601]
Addition questions of 4- or 5-digit numbers which include thousandths. Algorithm is vertical but some questions are presented horizontally requiring students to rewrite the question vertically to solve.
Subtraction questions of 4- or 5-digit numbers which include thousandths. Algorithm is vertical; some questions are presented horizontally, requiring students to rewrite the question vertically to solve.
Teacher notes: Strategies for the mental calculation of various mathematical questions.
Multiplying by 10, 100 or 1000. Includes examples with decimals.
Dividing by 10, 100 or 1000. Includes examples with decimals.
Revise all mental strategies in the series.
Set of 5 assessment tests to check on how students are progressing with each of the units in the Mental Strategies series of worksheets.
Set of 10 homework sheets to match each of the sets in the Mental Strategies series. Contains information for parents.
5pp. Features and functions of the Number Slide Gadget: Multiply and divide numbers by powers of ten, with and without decimals.
12pp.Sequence of lesson plans for the Number Slide Gadget.
10pp. Introduce x0.1 extending to x0.01 and 0.001.Use the Gadget to explore multiplying by a decimal. Includes lesson plans and worksheets.
10pp. Introduce ÷0.1 extending to ÷0.01 and 0.001.Use the Gadget to explore dividing by a decimal. Includes lesson plans and worksheets.