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
9 × 10 = ______
17 + 20 = ______
67 − 10 = ______
4 × 10 = ______
78 + 20 = ______
97 − 10 = ______
42 + 20 = ______
69 + 10 = ______
56 − 10 = ______
58 + 10 = ______
84 + 10 = ______
44 + 10 = ______
59 − 10 = ______
3 × 10 = ______
20 + 20 = ______
22 + 10 = ______
6 × 10 = ______
87 + 10 = ______
5 × 10 = ______
8 × 10 = ______
