math lesson

quiz is very hard you need to focus on the answer ex 635+635 to hard you should use your mind like 600+600=1200 30+30=1260 5+5= 12 the answer is 1270

try minus like ex 6534-2465 we take take 6000 to 2000=4000 and agian 500-400=100 and agian 30-60=30 and 5-4=1 answer is 4010

when we multiply it makes bigger numbers also is repeated addition .Ex 20 x 2 = 40, 20+20 = 40 like multiplication of 6 

division IT IS REPEATED SUBTRACTION EX 5 KIDS NEED 3 PENCILS TOTAL. HAVE 15 AND THE ANSWER IS 3 WHEN IT IS DIVIED TO 5 AND 15