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
27 − 10 = ______
71 + 20 = ______
8 × 10 = ______
69 + 10 = ______
53 + 10 = ______
61 + 20 = ______
80 − 10 = ______
5 × 10 = ______
4 × 10 = ______
31 − 10 = ______
40 + 20 = ______
3 × 10 = ______
38 + 20 = ______
12 + 10 = ______
68 − 10 = ______
9 × 10 = ______
65 − 10 = ______
66 − 10 = ______
76 − 10 = ______
78 + 20 = ______
