30112020 LO I can multiply a two digit

30/11/2020 LO: I can multiply a two digit number by another two digit number using the Grid Method.

Can you work this out by using the grid method? 73 x 58=

Did you get it right? X 70 3 50 3500 150 8 560 24 3650 + 584 4234

If no, here is a recap. . ! 25 x 35= 20 + 5 30 + 5 X 30 5 20 5

If no, here is a recap. . ! 25 x 35= X 20 5 30 600 6 150 15 5 100 10 25

What next? 25 x 35= X 20 5 30 600 150 5 100 25 6 1 1 + 8 0 5 0 2 7 0 0 0 5 5

Try this one… • Use the Grid Method of multiplication to work out this question… 71 x 43 =

71 x 43 = X 70 1 40 2800 28 40 3 210 21 3

71 x 43 = X 70 1 40 2800 28 40 3 210 21 3 2800 210 40 + 3 2000 1000 50 + 3 3053 (2000 + 0) (800 + 200) (10 + 40) (3 + 0)

LO: I can multiply a two digit number by another two digit number using the Grid Method. Section A Q 1) 92 x 50 = Q 2) 18 x 98 = Q 3) 17 x 87 = Q 4) 58 x 39 = Q 5) 53 x 44 = Q 6) 22 x 70 = Q 7) 51 x 32 = Q 8) 43 x 71 = Q 9) 93 x 68 = Q 10) 21 x 53 = Section B Q 1) 92 x 139 = Q 2) 87 x 166 = Q 3) 82 x 185 = Q 4) 66 x 158 = Q 5) 46 x 136 = Q 6) 28 x 102 = Q 7) 93 x 165 = Q 8) 99 x 151 = Q 9) 64 x 191 = Q 10) 21 x 117 = Section D Q 1) Q 2) Q 3) Q 4) Q 5) Q 6) Q 7) Q 8) A baker bakes twenty doughnuts per day, how many does he bake in a 2 weeks? Sam bought 138 rolls of paper. Each roll was 34 m long. How long is it altogether? Tom collected 57 stamps a week for 2 years. How many stamps did he collect? Niamh eats 246 apples a year. How many does she eat in twelve years? A Garden is 20 m wide and its length is 187 m. What is its total area? Mr Senior swims 48 lengths a week, how many lengths does he swim a year? If Fanta is packed in boxes of 67, how many cans will there be in 25 boxes? Mrs Haddleton runs 12 laps of the field a week. How many laps in 3. 5 years? Section C Q 1) Q 2) Q 3) Q 4) Q 5) Q 6) Q 7) Q 8) Q 9) Q 10) Q 11) Q 12) Q 13) Q 14) Q 15) Q 16) Q 17) Q 18) Q 19) Q 20) 155 x 497 119 x 517 101 x 227 109 x 141 122 x 642 114 x 363 180 x 301 169 x 316 109 x 578 116 x 197 157 x 367 188 x 176 175 x 258 121 x 417 159 x 378 150 x 533 132 x 126 120 x 538 145 x 601 152 x 922 = = = = =

Section A Q 1) Q 2) Q 3) Q 4) Q 5) Q 6) Q 7) Q 8) Q 9) Q 10) 92 18 17 58 53 22 51 43 93 21 x x x x x Answer Key Section B 50 = 4600 98 = 1764 87 = 1479 39 = 2262 44 = 2332 70 = 1540 32 = 1632 71 = 3053 68 = 6324 53 = 1113 Q 1) Q 2) Q 3) Q 4) Q 5) Q 6) Q 7) Q 8) Q 9) Q 10) 92 x 87 x 82 x 66 x 46 x 28 x 93 x 99 x 64 x 21 x 139 = 12788 166 = 14442 185 = 15170 158 = 10428 136 = 6256 102 = 2856 165 = 15345 151 = 14949 191 = 12224 117 = 2457 Section D Q 1) Q 2) Q 3) Q 4) Q 5) Q 6) Q 7) Q 8) 20 x 14 =280 138 x 34 =4692 57 x (52 x 2) =5928 246 x 12 =2952 187 x 20 =3740 48 x 52 =2496 67 x 25 =1675 12 x 182 =2184 Section C Q 1) Q 2) Q 3) Q 4) Q 5) Q 6) Q 7) Q 8) Q 9) Q 10) Q 11) Q 12) Q 13) Q 14) Q 15) Q 16) Q 17) Q 18) Q 19) Q 20) 155 x 119 x 101 x 109 x 122 x 114 x 180 x 169 x 109 x 116 x 157 x 188 x 175 x 121 x 159 x 150 x 132 x 120 x 145 x 152 x 497 = 77035 517 = 61523 227 = 22927 141 = 15369 642 = 78324 363 = 41382 301 = 54180 316 = 53404 578 = 63002 197 = 22852 367 = 57619 176 = 33088 258 = 45150 417 = 50457 378 = 60102 533 = 79950 126 = 16632 538 = 64560 601 = 87145 922 = 140144

Can you multiply three digit numbers? How would you set this one out? 124 x 45 =

124 x 45 = X 100 20 40 4000 800 5 500 100 4000 800 1 6 0 4 500 160 1 0 0 + 20 4000 20 1500 + 80 5580 (4000 + 0) (800+100+500) (60+20)

Assessment • Using the Grid Method of multiplication, work out the answer to these: 1. 46 x 25 2. 560 x 28 3. 245 x 152

Assessment Answers Q 1 40 6 20 800 120 5 200 30 800 120 200 30 1150 Q 2 Q 3 200 40 5 100 20000 4000 50 10000 250 2 400 80 10 500 60 20 10000 1200 8 4000 20000 4000 500 10000 250 400 80 10 37240 480 10000 1200 4000 480 15680