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
5 × 10 = ______
3 × 10 = ______
67 − 10 = ______
58 − 10 = ______
55 + 10 = ______
51 + 10 = ______
46 − 10 = ______
22 − 10 = ______
94 − 10 = ______
75 + 20 = ______
36 + 10 = ______
89 + 20 = ______
24 + 20 = ______
42 + 20 = ______
1 × 10 = ______
23 + 10 = ______
6 × 10 = ______
2 × 10 = ______
81 − 10 = ______
88 + 20 = ______
