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
83 + 20 = ______
70 + 10 = ______
5 × 10 = ______
21 − 10 = ______
82 + 20 = ______
9 × 10 = ______
74 + 20 = ______
54 + 10 = ______
42 + 20 = ______
2 × 10 = ______
4 × 10 = ______
17 + 20 = ______
61 − 10 = ______
79 + 10 = ______
58 − 10 = ______
85 − 10 = ______
45 + 10 = ______
35 − 10 = ______
59 + 10 = ______
41 + 10 = ______
