Solve multiplication and division problems by using place value.
Solve multiplication and division problems that involve decimals.
Number Framework Stages 7 and 8.
Sets of ten connected unilink cunes wrapped in paper
Using Materials
Students work out 3 x 1.4. It is likely that students will group the 3 wholes. Then they group the 12 tenths into 1 whole + 2 tenths.
So 3 x 1.4 = 4.2
Using Materials, Using Imaging, and Using Number Properties
The teacher can select problems from the set below for any stage. When teachers make up their own examples, after grouping the tenths there needs normally to be at least 10 tenths. So 2 x 4.7 is suitable, but 4 x 3.2 is not.
Problems:
3 x 1.5 2 x 1.7 5 x 1.2 4 x 0.4
2 x 2.8 3 x 2.5 6 x 0.5 5 x 2.4
5 x 4.2 2 x 6.6 3 x 4.5 8 x 0.4
6 x 0.5 2 x 10.8 3 x 9.5 5 x 6.4
2 x 6.6 x 4.5 5 x 10.2 10 x 0.4