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
81 − 10 = ______
69 + 10 = ______
55 + 10 = ______
62 − 10 = ______
70 + 20 = ______
46 + 10 = ______
76 − 10 = ______
9 × 10 = ______
3 × 10 = ______
66 + 20 = ______
35 + 10 = ______
41 + 10 = ______
72 − 10 = ______
2 × 10 = ______
15 + 20 = ______
71 − 10 = ______
16 + 20 = ______
7 × 10 = ______
44 + 20 = ______
83 + 10 = ______
