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
48 + 10 = ______
42 + 10 = ______
58 + 20 = ______
62 − 10 = ______
2 × 10 = ______
84 + 20 = ______
1 × 10 = ______
94 − 10 = ______
83 − 10 = ______
4 × 10 = ______
42 − 10 = ______
37 − 10 = ______
6 × 10 = ______
51 − 10 = ______
38 + 10 = ______
35 + 10 = ______
31 + 20 = ______
18 + 20 = ______
61 + 20 = ______
49 + 10 = ______
