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
18 + 20 = ______
84 − 10 = ______
9 × 10 = ______
98 − 10 = ______
41 − 10 = ______
24 + 20 = ______
25 − 10 = ______
2 × 10 = ______
76 + 10 = ______
75 + 10 = ______
52 − 10 = ______
5 × 10 = ______
54 + 20 = ______
67 − 10 = ______
58 + 20 = ______
40 − 10 = ______
48 + 10 = ______
80 + 20 = ______
77 − 10 = ______
26 + 20 = ______
