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
39 + 20 = ______
49 − 10 = ______
97 − 10 = ______
14 + 10 = ______
8 × 10 = ______
5 × 10 = ______
91 − 10 = ______
69 + 20 = ______
45 − 10 = ______
50 − 10 = ______
69 + 10 = ______
52 + 20 = ______
79 + 20 = ______
85 + 20 = ______
41 + 10 = ______
39 + 10 = ______
29 − 10 = ______
7 × 10 = ______
3 × 10 = ______
2 × 10 = ______
