Tenths introduced as a tenth of a one block.
Use a number expander to show, for example, 2.3 as 23 tenths.
Add and subtract tenths without regrouping.
Find numbers one tenth before and after a number.
Count in tenths by 1s, 2s and 5s in any number.
Compare numbers with tenths, allowing for ordering and sequencing.
free
Add tenths with regrouping.
Subtract tenths with regrouping.
Use an abacus to compare decimals to tenths
Regroup decimals such as 2.3 as 1 one and 13 tenths.
Game that can be played using the tenths random dice roller on Professor Pete’s Decimals software (separate purchase needed).
47 slides. Reading and spelling numbers to 99,999.99. 4 lessons. Includes tens of thousands fractions and decimals. Interactive PowerPoint Think Bubble Math 409
4pp. Writing numbers to 99,999.99. Worksheet accompanies “Spelling Numbers to 99,999.99” [PowerPoint TBM 409]
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. Investigating 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 TBM 609
4pp. Extreme numbers worksheet. Worksheet accompanies “Extreme Numbers” [PowerPoint TBM 609]
39 slides. Connects common fraction tenths with decimals. Includes folding paper, number lines, base ten blocks, shapes of mixed numbers, and Ones and tenths. Interactive PowerPoint Think Bubble Math 405
3 pp. Multiple shapes, and number lines for connecting tenths with decimals. Worksheets to accompany “Tenths as Decimals” [PowerPoint TBM405]
82 slides. Connects common fraction hundredths with decimals. Includes number lines, base ten blocks, shapes of mixed numbers of ones, tenths and hundredths.. Interactive PowerPoint Think Bubble Math 408
3 pp. Multiple shapes, and number lines for connecting hundredths with decimals. Worksheets to accompany “Hundredths as Decimals” [PowerPoint TBM408]
40 slides. Tenths and hundredths linked to common fractions. Convert between them with a number expander. 10 hundredths is 1 tenth. Locate on number lines. Interactive PowerPoint Think Bubble Math 502
1 p. Draw common fractions, decimals and locations on a number line. Use with “Tenths and Hundredths” [PowerPoint TBM502]
1 p. Number Expander with ones, tenths and hundredths. Use with “Tenths and Hundredths” [PowerPoint TBM502]
1 p. Draw common fractions, decimals, locations on number lines and number expander use. Use with “Tenths and Hundredths” [PowerPoint TBM502]
53 slides. Visual presentation of adding multiple 3 digit numbers and 4 digit numbers. 4 lessons. Regrouping included; regrouped digits are above the answer (v2 available; regrouped digits above the top numeral). Interactive PowerPoint Think Bubble Math 406 v1
53 slides. Visual presentation of adding multiple 3 digit numbers and 4 digit numbers. 4 lessons. Regrouping included; regrouped digits are above the top numeral (v1 available; regrouped digits above the answer). Interactive PowerPoint Think Bubble Math 406 v2
4 pp. Worksheets to accompany Interactive PowerPoint Think Bubble Math 406.
33 slides. Rounding numbers to tens, hundreds, and decimals to ones. Using rounding in estimating answers and shopping. Interactive PowerPoint Think Bubble Math 503
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 2- or 3-digit numbers which include tenths. Algorithm is vertical but some questions are presented horizontally, requiring students to rewrite the question vertically to solve.
Subtraction questions of 2- or 3-digit numbers which include tenths. Algorithm is vertical; some questions are presented horizontally, requiring students to rewrite the question vertically to solve.
free
Tutorial-style worksheets to explain to students what is happening when a whole number is multiplied by a tenth. Contains practice examples.
Tutorial-style worksheets to explain to students what is happening when tenths are multiplied by tenths. Contains practice examples.
Tutorial-style worksheets to explain to students what is happening when whole numbers and tenths are multiplied by tenths. Contains practice examples.
Poster set: Pictorial representation of what happens when wholes and decimals are multiplied. Resize as desired, print and laminate.
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.
free
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.
