Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
7 × 10 = ______
60 + 10 = ______
46 + 20 = ______
30 + 20 = ______
72 + 10 = ______
39 + 10 = ______
75 + 20 = ______
99 − 10 = ______
77 + 10 = ______
93 − 10 = ______
58 − 10 = ______
77 − 10 = ______
27 − 10 = ______
1 × 10 = ______
13 + 10 = ______
43 − 10 = ______
49 − 10 = ______
53 − 10 = ______
58 + 20 = ______
61 + 10 = ______
