Strategy

Stage 8 - Solve decimal problems using doubling and halving

WALT Solve decimal problems using doubling and halving

Success Criteria

  • Know what doubling and halving the factors does not change the answer
  • Select the best number to double and then half the other number
  • Use basic facts knowledge to solve
Stage 8 - Solve decimal problems using doubling and halving
Student DoublingAndHalvingSheet (1).pdf

WALT use multiplicative strategies to solve fraction and decimal problems

Sign into e-ako and click on the yellow multiplicative button. Then select the first blue button on level 4.

Stage 6 - Use basic facts and place value to solve division problems

WALT Use basic facts and place value to solve division problems

Success Criteria

  • Use known basic facts to find a tidy number close to the number that we are dividing
  • Find the remainder from using our basic facts
  • Know that 3 x 2 = 6 so 3 x 20 = 60
Task 1
Task 2

WALT use multiplicative strategies to solve fraction and decimal problems

Sign into e-ako and click on the yellow multiplicative button. Then select the third blue button on level 3.

Stage 8 - Use commutativity to solve decimal multiplication problems.

WALT Use commutativity to solve decimal multiplication problems.

Success Criteria

  • Can explain what commutative means
  • Convert between decimals and fractions
  • Solve as a fraction problem
  • Knows that when a whole number is multiplied by a decimal the answer is smaller.
Stage 8 - Use commutativity to solve decimal multiplication problems

WALT use multiplicative strategies to solve fraction and decimal problems

Sign into e-ako and click on the yellow multiplicative button. Then select the first blue button on level 4.

Worksheet 1