Using derived facts to multiply mentally

Maths

Multiplication and division

Which of the following methods for answering a multiplication questions is NOT a mental strategy?

Today we discussed distributive law in relation to multiplication. But which of the following number sentences does NOT correctly represent distributive law?

Which of the following representations would be efficient for the calculation 317 x 23?

For which of these calculations would you consider using a mental strategy and NOT a written method?

Which calculation do the dienes represent?

The strategy of separating a number into its individual units of value is commonly known as?

The bar model below is used to help divide or multiply numbers.  What number should be placed in the top white boxes?

Which of the following number sentences will help you to solve the calculation 25 x 8?

Which derived fact helps me to mentally solve                         240 ÷ 5?

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