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
2 × 10 = ______
6 × 10 = ______
51 − 10 = ______
84 + 10 = ______
21 + 20 = ______
64 + 10 = ______
1 × 10 = ______
5 × 10 = ______
79 − 10 = ______
58 + 20 = ______
8 × 10 = ______
9 × 10 = ______
3 × 10 = ______
24 − 10 = ______
7 × 10 = ______
63 + 10 = ______
36 + 10 = ______
13 + 20 = ______
34 + 10 = ______
48 + 20 = ______
