Maths

4-02-19

WALT: Solve multiplication problems by useing various strategies

Problems	Stratigies	Answer	Comments
57x19	50x10=500 7x10=70 50x9=450 7x9=63 500+450+70+63= 1083	1083	First you split 57 into 50 and 19 into 10 and times 50 and 10 and have the answer 500 Than you times 50 and 9 and you have 450. Than you times 7 and 10 than you times 7 and 9 and 7x10=70 and 7x9=63 And then add it all together and get the answer 1083
37x17	30x10=300 7x10=70 30x7=210 7x7=49 300+210+70+49= 629	629	First you split 37 into 30 and 17 into 10 and times 30 and 10 and have the answer 300 Than you times 30 and 7 and you have 210. Than you times 7 and 10 than you times 7 and 7 and 7x10=70 and 7x7=49 And then add it all together and get the answer 629
46x12	40x10=400 40x2=80 6x10=60 6x2=12 400+80+60+12=552	552	First you split 46 into 40 and 12 into 10 and times 40 and 10 and have the answer 40 Than you times 40 and 2 and you have 80. Than you times 6 and 10 than you times 7 and 7 and 6x10=60 and 6x2=12And then add it all together and get the answer 552
83x13	80x10=800 80x3=240 3x10=30 3x3=9 800+240+30+9= 1079	1079	First you split 83 into 80 and 13 into 10 and times 80 and 10 and have the answer 800 Than you times 80 and 3 and you have 240. Than you times 3 and 10 than you times 3 and 3 and 3x10=30 and 3x3=9 And then add it all together and get the answer 1079
67x16	60x10=600 60x6=360 7x10=70 7x6=42 600+360+70+42= 1072	1072	First you split 67 into 60 and 16 into 10 and times 60 and 10 and have the answer 600 Than you times 60 and 6 and you have 360. Than you times 7 and 10 than you times 7 and 6 and 7x10=70 and 7x6=42 And then add it all together and get the answer 1072