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Mental computation

MC_GT_T1_E6_fig3

Number line showing 56 subtracted from an unknown point to reach the result of 37.

Number line for a 'start unknown' problem.
Material from NZ Maths website published by the New Zealand Ministry of Education. Reproduced with permission from the New Zealand Ministry of Education © Crown.

MC_GT_T2_E1_A3_fig1

How many tiles do I need? A partial 6 by 5 array showing only the far left column and top row.

MC_GT_T2_E1_fig1

Six eggs in a carton arranged in a 2 by 3 array.

An array of eggs.

MC_GT_T2_E1_fig2

25 juice boxes arranged in a 5 by 5 array.

An array of juice boxes.

MC_GT_T2_E1_fig3

16 chocolates arranged in a 4 by 4 array.

An array of chocolates.

MC_GT_T2_E4_A2_fig1

10 by 10 multiplication grid with product of 15 shown as 3 by 5 and 5 by 3, and product of 24 shown as 6 by 4 and 4 by 6.

Sample multiplication fact grid.

MC_GT_T2_E4_A2_fig2

10 by 10 multiplication grid with all products shown, and products of 28, 48 and 72 circled.

Completed multiplication fact grid.

MC_GT_T2_E4_A2_fig3

10 by 10 multiplication grid with different colours showing the zero products, the ones products, the double ones, the double twos, the double threes, the double fours, and the relating to tens.

Shaded multiplication fact grid.

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