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
75 + 20 = ______
22 − 10 = ______
35 + 20 = ______
45 − 10 = ______
39 + 10 = ______
35 − 10 = ______
53 + 10 = ______
66 + 20 = ______
44 + 20 = ______
83 + 20 = ______
92 − 10 = ______
2 × 10 = ______
20 + 10 = ______
43 − 10 = ______
84 + 10 = ______
62 + 10 = ______
57 − 10 = ______
3 × 10 = ______
51 + 10 = ______
31 + 10 = ______
