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
67 + 10 = ______
58 + 20 = ______
51 − 10 = ______
92 − 10 = ______
37 − 10 = ______
28 − 10 = ______
18 + 20 = ______
29 − 10 = ______
13 + 10 = ______
47 − 10 = ______
46 + 20 = ______
3 × 10 = ______
57 + 20 = ______
77 + 10 = ______
9 × 10 = ______
4 × 10 = ______
42 − 10 = ______
6 × 10 = ______
11 + 20 = ______
50 + 20 = ______
